What to do, when...

one is inundated with requests to join Twitter, Facebook, My Space etc. when one is not prepared to sit at the computer 24/7/52/1....nor has a superdooper cellphone?

I am still not much in favor of Twitter etc.
What CAN one really discuss in few words or less?
I thought with email, 'telegramming' has gone by the wayside, now this!
The 'new' language for people with very short attention spans.
Good Bye Thank You Notes! Good Bye Letters! Good Bye Essay!
Good Bye Short Story! Good Bye Novel! Good Bye forever?
All's done by the net, visible to all and sundry.... that is progress?]

Anyway...in the spirit of the Season-Cactus, you light up my life