it depends on the way you want to approach it, but i like twitter alot. you can keep up to date with your friends, favourite blogs, celebrities etc. Its a nice way to find out about interesting gigs and cool stuff online for example. In a way it is like a text, in terms of the length - but the information content is pretty different. For example your twitter Jonathan might read:
Got Will's Lion back from the paint shop, they did a great job
Trying out new fret dressing tool from stew mac, think it will be useful
BKP package arrived from Tim, the secret new Schenker pickup rocks!
The '58 V is going well, just got the vintage correct tailpiece in
Philly Q popped in with his Edwards, chatting Steel Panthers
I'd be interested in that.
edit:
(my twitter is gw3m if anyone is interested)