The thing about places like Myspace and similar blog spaces is that they are the height of ego. Usually only about a dozen or so people are going to specific ones at a time. So it's mostly an exercise in self-absorption and "me, me, me" meness.
I think the more isolated people become by technology, they then make an attempt to be noticed. Sort of sound their "barbaric yawp" out there across the wilderness and chasms of the internet and see if anyone cares by responding.
I'm finding I'm spending less time on the internet in general because the novelty, like having 500 cable channels, has worn off and I can find more productive and fulfilling things to do with my time. It's a worthwile tool, I still have certain sites I visited regularly, but I glean the information I want from them, don't dawdle, and press on now. Nor do I spend as much time posting, given how small the audiences for some of these places are. Too much energy spent; for too little return. I'd rather expend the energy in real relationships with real people...Too many internet relationships are based on what Kurt Vonnegut calls the "grand faloon" which is because folks have one thing in common, they suddenly think they have a relationship of substance, when in fact, if they actually were around each other any length of time, they'd find out how little they actually do have in common.
I'm not saying one can't develop real friendships and relationships through the internet, it does happen...it's happened with me, but only rarely. It's truly silly to think that everyone on a posting site you post on is suddenly your deepest bosom buddy.