I agree pretty much completely with this. I've also seen the same cycle happen over and over again: I was one of the beta testers for Digg.

At a certain point I think you just get tired. I can't count the number of times that I've posted a straightforward technical response, then downvoted, and said that my opinion is worthless unless I provide sources and that the commenter is a highly paid consultant so he knows what he is talking about.

For example, just about a month ago it looked like someone was confused about a basic systems issue. I posted with a quick comment about the nature of optimization in the memory hierarchy which featured a well-known result in standard CS literature. You know, there are times when I don't mind digging through IPDPS or the ACM for proper citations, but a lot of the time I resent the fact that the argumenter didn't even take the time to do some basic research about the topic. As I said, I get tired.