Pervert seems a bit judgemental. The more interesting fact is that something like 13% of the population (assuming I can extrapolate) would like to show others their genitals. I wonder what the true stat is for the population.
But you can't extrapolate. A lot of people heard about chatroulette and heard that it's filled with perverts. The average person is a mixture of intrigued and scared by this, but an exhibitionist will definitely want to give it a try. So there's a huge selection bias.
Of the perverts that were identified, only 8% were female. Combined with the overall female rate, that means less than 1% of chats feature a female pervert.
The stats that Techcrunch cites don't actually match up with its conclusion. If 13% of ChatRoulette users are perverts, and of the perverts, 8% are female, then 0.13 * 0.08 = 0.0104 (or slightly, barely, more than 1%) are female perverts. If it had been "of the females, 8% are perverts", then it would be under 1%.
When we were doing the research the geo-ip information wasn't factored in, but overall we saw quite similar. Good to see that the results are reproducable (almost like science)!
http://www.youtube.com/watch?v=32vpgNiAH60