NEW YORK -- Twitter is introducing a feature that lets advertisers target ads based on words that appear in users' tweets.
Twitter said in a blog post this week that users won't see any difference in their use of Twitter and the change doesn't mean ads will show up more frequently.
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Rather, Twitter says this keyword targeting will bring its users ads that are more relevant to them. For example if someone writes a tweet about a band they like, they might see an ad about the band's upcoming concert nearby.
Twitter is privately held and doesn't disclose revenue figures. Research firm eMarketer, however, expects the San Francisco company's worldwide ad revenue to hit $583 million this year. Next year it is expected to grow to nearly $1 billion.