Forum Moderators: Robert Charlton & goodroi
If it's real user interaction, then it might also lead to social sharing of various kinds - people love to link to their own stuff, or share things from others they respect.
User generated commentary (UGC) is one can of worms that needs to be managed 100% of the time. Do keep in mind that old adage of "one bad apple..."
You can use Talkback...