If the numbers were any good we'd probably know. Most other online games will shout as loudly as possible with press releases about how many X millions are playing or whatever. Recent example: http://ve3d.ign.com/articles/news/62...ng-And-Growing
Note* I never heard of this game until right now...googled "online fps" and they are the first link (with google's personalized results - second link without). I went 15 pages in and didn't even see Quakelive...sad.