Just give weight to the good stuff and ignore stuff that you can't score as quality
I hope google uses this mentality when it comes to comments and other forms of UGC. Unfortunately I don't believe that to be the case for Mr. Panda.
Two of my sites are set up identical to each other just different topics. One escaped panda, and one got hit hard.
The pandalized site has 5,000+ comments while the escapee has always had comments disabled.
Pages with 50+ comments have sunk to page 5 and beyond in the SERPS. Now this site caters to a young uneducated crowd so a lot of the comments aren't grammatically correct. But still, am I supposed to sacrifice user engagement to get on Panda's good graces?
I suppose I should wipe the slate clean and just install Facebook Comments.