For those that use these to suggest that cyberlockers are illegal: The one site that is actually fighting back keeps having it's trial pushed back and back and back and back because they have no case against it.
Because "just ignoring it" doesn't make it go away? it doesn't make you appear any stronger or more sure of yourself? In effect, the mentality only promotes bullying, and is usually used by people who just don't want to deal with a problem.
I think Techdirt is actually pretty good about the whole "I disagree" over actual report issue.
See, there's a line between "I disagree" and "Only serves as flame bait and doesn't add to the discussion at all" like pretty much all of OOTB's posts.
I've seen a lot of people here have debates with people in the comments that have polar opposite views (Including pro-copyright ones) without usage of the "Report" button unless a party started attacking the other baselessly.
Here's the thing. If your comment is destructive instead of constructive, it is going to be reported. That is how it works here. I rarely, if ever, see it used as an "I disagree" button unless the person has already proved that he is not willing to have a constructive conversation.