Our misplaced faith in Twitter Trends

#OccupyWallStreet probably isn't being censored, but it's time to stop worshiping algorithms

Topics: Twitter, Occupy Wall Street, Social Media, ,

Our misplaced faith in Twitter Trends (Credit: Salon/AP)
A longer version of this piece originally appeared on Culture Digitally.

The interesting question is not whether Twitter is censoring its Trends list. The interesting question is, what do we think the Trends list is, what it represents and how it works, that we can presume to hold it accountable when we think it is “wrong”? What are these algorithms, and what do we want them to be?

It’s not the first time it has been asked. Gilad Lotan at SocialFlow (and erstwhile Microsoft researcher), spurred by questions raised by participants and supporters of the Occupy Wall Street protests, asks the question: Is Twitter censoring its Trends list to exclude #occupywallstreet and #occupyboston? While the protest movement gains traction and media coverage, and participants, observers and critics turn to Twitter to discuss it, why are these widely known hashtags not trending? Why are they not trending in the very cities where protests have occurred, including New York?

The presumption, though Gilad carefully debunks it, is that Twitter is, for some reason, either removing #occupywallstreet from Trends, or has designed an algorithm to prefer banal topics like Kim Kardashian’s wedding over important contentious, political debates. Similar charges emerged around the absence of #wikileaks from Twitter’s Trends when the trove of diplomatic cables was released in December of last year, as well as around the #demo2010 student protests in the U.K., the controversial execution of #TroyDavis in the state of Georgia, the Gaza #flotilla, even the death of #SteveJobs. Why, when these important points of discussion seem to spike, do they not Trend?



Despite an unshakable undercurrent of paranoid skepticism, in the analyses and especially in the comment threads that trail off from them, most of those who have looked at the issue are reassured that Twitter is not in fact censoring these topics. Along with Gilad’s thorough analysis, Angus Johnston has a series of posts debunking the charge of censorship around #wikileaks. Trends has been designed (and redesigned) by Twitter not to simply measure popularity, i.e., the sheer quantity of posts using a certain word or hashtag. Instead, Twitter designed the Trends algorithm to capture topics that are enjoying a surge in popularity, rising distinctly above the normal level of chatter. As Twitter representatives have said, they don’t want simply the most tweeted word (in which case the Trend list might read like a grammar assignment about pronouns and indefinite articles) or the topics that are always popular and seem destined to remain so (apparently this means Justin Bieber).

But the debate about tools like Twitter Trends is, I believe, a debate we will be having more and more often. As more of our online public discourse takes place on a select set of private content platforms and communication networks, and these providers turn to complex algorithms to manage, curate and organize these massive collections, there is an important tension emerging between what we expect these algorithms to be, and what they in fact are. Not only must we recognize that these algorithms are not neutral, and that they encode political choices, and that they frame information in a particular way; we must also understand what it means that we are coming to rely on these algorithms, that we want them to be neutral, we want them to be reliable, we want them to be the effective ways in which we come to know what is most important.

Twitter Trends is only the most visible of these tools. The search engine itself, whether Google or the search bar on your favorite content site (often the same engine, under the hood), is an algorithm that promises to provide a logical set of results in response to a query, but is in fact the result of an algorithm designed to take a range of criteria into account so as to serve up results that satisfy, not just the user, but the aims of the provider, its vision of relevance or newsworthiness or public import, and the particular demands of its business model. As James Grimmelmann observed, “Search engines pride themselves on being automated, except when they aren’t.” When Amazon, or YouTube, or Facebook, offer to algorithmically and in real time report on what is “most popular” or “liked” or “most viewed” or “best selling” or “most commented” or “highest rated,” it is curating a list whose legitimacy is based on the presumption that it has not been curated. And we want them to feel that way, even to the point that we are unwilling to ask about the choices and implications of the algorithms we use every day.

Peel back the algorithms, and this becomes quite apparent. Yes, a casual visit to Twitter’s home page may present Trends as an unproblematic list of terms, which might appear a simple calculation. But a cursory look at Twitter’s explanation of how Trends works — in its policies and help pages, in its company blog, in tweets, in response to press queries, even in the comment threads of the censorship discussions — lays bare the variety of weighted factors Trends takes into account, and cops to the occasional and unfortunate consequences of these algorithms. WikiLeaks may not have trended when people expected it to because it had before; because the discussion of #wikileaks grew too slowly and consistently over time to have spiked enough to draw the algorithm’s attention; because the bulk of messages were retweets; or because the users tweeting about WikiLeaks were already densely interconnected. In response to charges of censorship, Twitter has explained why it believes Trends should privilege terms that spike, terms that exceed single clusters of interconnected users, new content over retweets, new terms over already trending ones. The algorithms that define what is “trending” or what is “hot” or what is “most popular” are not simple measures, they are carefully designed to capture something the site providers want to capture, and to weed out the inevitable “mistakes” a simple calculation would make.

At the same time, Twitter most certainly does curate its Trends lists. It engages in traditional censorship: For example, a Twitter engineer acknowledges here that Trends excludes profanity, something that’s obvious from the relatively circuitous path that prurient attempts to push dirty words onto the Trends list must take. Twitter will remove tweets that constitute specific threats of violence, copyright or trademark violations, impersonation of others, revelations of others’ private information, or spam. (Twitter has even been criticized for not removing some terms from Trends, as in this user’s complaint that #reasonstobeatyourgirlfriend was permitted to appear.) Twitter also engages in softer forms of governance, by designing the algorithm so as to privilege some kinds of content and exclude others, and some users and not others. Twitter offers rules, guidelines and suggestions for proper tweeting, in the hopes of gently moving users toward the kinds of topics that suit its site and away from the kinds of content that, were it to trend, might reflect badly on the site.

Ironically, terms like #wikileaks and #occupywallstreet are exactly the kinds of terms that, from a reasonable perspective, Twitter should want to show up as Trends. If we take the position that Twitter is benefiting from its role in the democratic uprisings of recent years, and that it is pitching itself as a vital tool for important political discussion, and that it wants to highlight terms that will support that vision and draw users to topics that strike them as relevant, #occupywallstreet seems to fit the bill. So despite carefully designing its algorithm away from the perennials of Bieber and the weeds of common language, it still cannot always successfully pluck out the vital public discussion it might want. In this, Twitter is in agreement with its critics; perhaps #wikileaks should have trended after the diplomatic cables were released. These algorithms are not perfect; they are still cudgels, where one might want scalpels. The Trends list can often look, in fact, like a study in insignificance. Not only are the interests of a few often precisely irrelevant to the rest of us, but much of what we talk about on Twitter every day is in fact quite everyday, despite their most heroic claims of political import. But, many Twitter users take it to be not just a measure of visibility but a means of visibility — whether or not the appearance of a term or #hashtag increases audience, which is not in fact clear. Trends offers to propel a topic toward greater attention, and offers proof of the attention already being paid. Or seems to.

Of course, Twitter has in its hands the biggest resource by which to improve its tool, a massive and interested user base. One could imagine “crowdsourcing” this problem, asking users to rate the quality of the Trends lists, and assessing these responses over time and a huge number of data points. But it faces a dilemma: Revealing the workings of its algorithm, even enough to respond to charges of censorship and manipulation, much less to share the task of improving it, risks helping those who would game the system. Everyone from spammers to political activists to 4chan tricksters to narcissists might want to “optimize” their tweets and hashtags so as to show up in the Trends. So the mechanism underneath this tool, which is meant to present a (quasi) democratic assessment of what the public finds important right now, cannot reveals its own “secret sauce.”

Which in some ways leaves us, and Twitter, in an unresolvable quandary. The algorithmic gloss of our aggregate social data practices can always be read/misread as censorship, if the results do not match what someone expects. If #occupywallstreet is not trending, does that mean a) it is being purposefully censored; b) it is very popular but consistently so, not a spike; c) it is actually less popular than one might think? Broad scrapes of huge data, like Twitter Trends, are in some ways meant to show us what we know to be true, and to show us what we are unable to perceive as true because of our limited scope. And we can never really tell which it is showing us, or failing to show us. We remain trapped in an algorithmic regress, and not even Twitter can help, as it can’t risk revealing the criteria it used.

But what is most important here is not the consequences of algorithms, it is our emerging and powerful faith in them. Trends measures “trends,” a phenomenon Twitter gets to define and build into its algorithm. But we are invited to treat Trends as a reasonable measure of popularity and importance, a “trend” in our understanding of the term. And we want it to be so. We want Trends to be an impartial arbiter of what’s relevant, and we want our pet topic, the one it seems certain that “everyone” is (or should be) talking about, to be duly noted by this objective measure specifically designed to do so. We want Twitter to be “right” about what is important, and sometimes we kinda want them to be wrong, deliberately wrong — because that will also fit our worldview: that when the facts are misrepresented, it’s because someone did so deliberately, not because facts are in many ways the product of how they’re manufactured.

We don’t have a sufficient vocabulary for assessing the algorithmic intervention in a tool like Trends. We’re not good at comprehending the complexity required to make a tool like Trends — that seems to effortlessly identify what’s going on, that isn’t swamped by the mundane or the irrelevant. We don’t have a language for the unexpected associations algorithms make, beyond the intention (or even comprehension) of their designers. We don’t have a clear sense of how to talk about the politics of this algorithm. If Trends, as designed, does leave #occupywallstreet off the list, even when its use is surging and even when some people think it should be there, is that the algorithm correctly assessing what is happening? Is it looking for the wrong things? Has it been turned from its proper ends by interested parties? Too often, maybe in nearly every instance in which we use these platforms, we fail to ask these questions. We equate the “hot” list with our understanding of what is popular, the “Trends” list with what matters. Most important, we may be unwilling or unable to recognize our growing dependence on these algorithmic tools, as our means of navigating the huge corpuses of data that we must, because we want so badly for these tools to perform a simple, neutral calculus, without blurry edges, without human intervention, without having to be tweaked to get it “right,” without being shaped by the interests of their providers.

Tarleton Gillespie is a professor of Communication and Information Science at Cornell University. He is the author of "Wired Shut: Copyright and the Shape of Digital Culture" and is writing a new book on how private online media platforms curate public discourse. He co-curates the blog Culture Digitally.

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