Personally, I only really post on these dumb forums out of nervous compulsion. I am fairly busy in "real" most of the time, and this crap is something I do when I feel my wheels are spinning ineffectually in the mud, especially when I'm under pressure.
And frankly, I think that we are under-using the Internet's potential. I get extremely annoyed with people who seem to believe that our misuse of this powerful resource is due to an inherent fault or short-coming associated with the resource, rather than just the typical tendency of human beings to turn something perfectly worthwhile into useless trash given half a chance. In Egypt, where they didn't have the option of treating it as a useless toy, it helped shape a revolution, for better or for worse.