Groups 2 to launch "Google Groups is the third most popular service the company offers, following Web and image search."

Not sure what definition of "popular" they're using, but at least up until recently, Blogger/Blog*Spot was the third most popular service Google offered, in terms of unique visitors (according to MediaMetrix)—with many times more than Groups.

I wouldn't be surprised if Groups 2 reaches the distinction soon, though, since it's mailing lists/discussion boards (like Yahoo! Groups), instead of Usenet. I thought I'd take the chance to point out Blogger's comparitive reach in the meanwhile, though, since I was always trying to get people in Google to recognize it.