Was rereading Steve Levy's great piece about YC on Wired.com just now and scrolled down to read the comments:
http://www.wired.com/magazine/2011/05/ff_ycombinator/
There are 17 comments on the article. 11 of them are spam comments.
I see this more and more on content sites. I assume they all are using various spam filtering systems. Yet the spammers win, again and again.
Is FB/Disqus the only answer?