This is intreguing. I look forward to REALLY getting into the report. I wish that they also listed ALL the web applications they reviewed. It'd probably be a tedius read, but it would be interesting to know where things like Tumblr and Wordpress fit in... amongst many others obviously.
Interesting... I don't spend any time in IRC Channels. I find them distracting. But it's cool that some people have gotten a job or two out of a Channel.
They're still a mainstay of open source projects. I remember when I first logged back into one circa 2000 and thought "Wait, people still use IRC?" Eight years later I'm still using Freenode; #startups is a nice extension of the news.YC community.