From Seth Godin:
Just about every organization, every online service, every product and every element of our culture now has chat rooms and forums devoted to a few people looking for something to complain about. Some of them even do it on television.
The fascinating truth is this: the people in these forums aren’t doing their best work. They rarely identify useful feedback or pinpoint elements that can be changed productively either. In fact, if you solved whatever problem they’re whining about, they wouldn’t suddenly become enthusiastic contributors. No, they’re just wallowing in the negative ions, enjoying the support of a few others as they dish about what’s holding them back.
It pays no dividends to go looking for useful insight from these folks. Go make something great instead.
I’ve met many a person that just wanted to complain. I’ve even seen a customer complain about the choice of photos put on a website. These people aren’t worth your time or energy.