It appears Twitter is finally had enough of third-party analytics companies getting all of the publicity over tweet counts–so it’s spilling the official beans.

Folks were tweeting 5,000 times a day in 2007. By 2008, that number was 300,000, and by 2009 it had grown to 2.5 million per day. Tweets grew 1,400% last year to 35 million per day. Today, we are seeing 50 million tweets per day—that’s an average of 600 tweets per second.

I may have to admit to contributing maybe half that number on some days.

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