Yelp Statistics: 22 Million Reviews On Yelp As of September 2011

[Update] The title of this post originally read: "Stunning: On Average, 8 Reviews Are Written On Yelp Every Second" - this was a mistake, as pointed out by DaPerzer. The title has been corrected now.

We spotted this today:

"Yelp had 22 million reviews on its network in September, an increase of 66% over the comparable period in 2010. The average review has more than 100 words.
The company’s website got 61 million unique visitors that month, up 63% over the year-ago period."

Statistics Source: Mashable