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Twitter tallies 200 million tweets per day

The company says that pop singer Rebecca Black has been the most popular pop-culture topic so far this year. Swine flu was tops for world events.

Twitter's depiction of tweets.
Twitter's depiction of tweets.

Twitter is seeing extremely strong growth, the company said yesterday.

According to a company blog post, Twitter users are now sending 200 million tweets each day. That figure becomes quite impressive when one considers that in January 2009, 2 million tweets were sent per day. And a year ago, the daily tweet tally stood at 65 million a day.

Twitter also looked at the most-popular topics on its site during the first six months of the year. According to Twitter, pop singer Rebecca Black was the top topic in pop culture so far this year, followed by Britney Spears' album "Femme Fatale," and Charlie Sheen. Swine Flu, Hosni Mubarak, and Easter were the top world-events topics on the site.

Twitter's growth over the years has been strong even through difficult times. During its especially swift growth in 2009, the site's users were welcomed by the Fail Whale--an image that displayed when the site was down--far more often than they would have liked. Twitter's downtime to become something of a running joke. But the whale never stopped people from coming back, and over the past year in particular, the site has been far more stable.

Even with its growth, Twitter is still far behind Facebook. According to Facebook's official figures, the site has more than 500 million active users who each month share over 30 billion pieces of content, including links, blog posts, and photo albums. There are even reports that Facebook has topped 750 million members.