Everyone knows Twitter was a crowded place. And, most people know Twitter traffic was on the rise. But few had and idea of how positively crazy it had become in the Twitterverse. According to Kevin Weil, who heads up the analytics squad over at Twitter, the microblogging platform is seeing something like 50 million tweets a day in 2010 – or, to look at it another way, an average of 600 tweets per second.

“Folks were tweeting 5,000 times a day in 2007,” Weil writes. “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.” That’s some pretty radical growth. But what do the numbers actually mean? In recent months, several analysts have pointed out that although Twitter traffic is up, the site is struggling to retain users.

For more wild facts about Twitter, go to csmonitor.com.