Usenet sociological note #25831
I still read a surprising amount of regular Usenet -- not as much as I did in past days, but probably still more than I ought -- but I still post very infrequently. Mostly, this is because I have to meet three criteria before I'll actually bother to post something:
1) No one else has said it
2) Saying it will actually be worthwhile
3) I know what I'm talking about
Mostly, this is because posts violating any of these three criteria irritate me immensely. Repeating what other people have already said (1) is annoying, arguing with trolls or idiots or other people who aren't going to change their mind (2) is really annoying, and getting something wrong that you can easily look up (3) is the most annoying of all.

Of course, given the volume and the nature of Usenet, the likelihood that something I want to say will pass these tests is quite low. So mostly I just content myself with absorbing information.