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Twitter to let advertisers target tweeters


Twitter will begin allowing advertisers to directly target users based on the interests they reveal in their tweets, the social media company said Thursday.

In an effort to draw advertisers to its paid ads program, the company also slashed the minimum price of "promoted tweets" to just a penny.

No longer content to be a "dumb" bulletin board, with 400 million micro-messages posted daily, Twitter has moved to a strategy of actively sifting through what each user is reading and tweeting in order to discern every individual's interests.

Google has long reaped huge profits by displaying ads based on what a user searches for in its search engine, while Facebook, a Twitter competitor, encourages users to proactively input their "likes." But Twitter has long faced the challenge of indirectly inferring these preferences.

Twitter will now allow companies to send paid ads in the forms of tweets to groups of users, bunched in more than 350 interest categories curated by Twitter itself.

CEO Dick Costolo has said in recent months that his company's value lies in its ability to mine its flow of information to build "an interest graph" showing its users' preference profiles -- which could be used by marketers to deliver targeted and relevant ads.

For instance, sports apparel retailers can target soccer fanatics for promotions, or film distributors might send tweets directed at keen Bollywood fans.

The new offering will allow companies to reach a "very narrow, very specific and incredibly focused audience," Kevin Weil, a Twitter director of product management, said in an interview.

Twitter engineers believe they can build a compelling ad delivery platform, particularly if marketers craft ads that seem to blend in with the tone and format of the service's flow of tweets, which are seen by some 140 million monthly active users.

In building its interest graph, Twitter analyzes "a host of signals," Weil said, including which accounts a user follows, as well as the subjects of tweets that are most frequently recirculated or replied to by the user.

The company's algorithms closely evaluate the latter, giving "a direct measure of what you're interested in," Weil said.

Between 1 and 3 percent of users who see a "promoted tweet" -- a paid ad -- click on the tweet in some way. But early beta tests have shown the engagement rate to be higher when tweets are directed using its new interest-targeting tool, Weil said, while declining to discuss specific results.

Valued at more than $8 billion but expected by analysts to make less than $300 million in revenue in 2011, Twitter has aggressively ramped up its advertising capabilities. But in streamlining its product to better show ads, the company has cracked down on how third-party services may use its content, sparking an outcry from Silicon Valley technologists who would like Twitter to remain a neutral media platform.

In protest against what they viewed as a Twitter experience increasingly corrupted by advertising, software developers in California this month launched, a Twitter-like rival that is supported by a $50 membership fee rather than ads.

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