Well there is an issue of overstimulation toxicity. The effect of depriving one's brain of the more powerful rhythms of deep consciousness in favor of fast, superficial, and fragmented i/o is a very real threat to sanity, health, and probably civilization as a whole.

Also, it's not just that MySpace is fugly and loud and tacky, it's that the whole crappy aesthetic has become desirable. It's supposed to look like that. Or whatever.

In the not too distant future, I think we will begin to see a lot of backlash from communication technology addiction. It's a stimulant drug, pure and simple. We need something physical to put our minds in - like giant robot legs or hydraulic genitals on our cars.