Like many people, I initially joined Twitter to hear the ramblings of various celebrities. Following musicians, in particular, can be all sorts of fun. Sometimes, their Twitter personas match up perfectly to their music (like Alison Sudol from A Fine Frenzy, who often Tweets about her love of nature and books), while others can reveal a whole new side of someone's personality (like Neko Case, who is a lot funnier that I might have guessed). Unfortunately, there's a lot of hilarious songwriters and musicians who have yet to join the revolution. Hopefully this list will prod them into signing up.

Paul Westerberg
The former Replacements frontman just seems like he'd be delightfully snarky in sarcastic. back in 2004, he did a session for AOL in which he was asked he preferred Goodfellas or Raging Bull, and promptly replied "both pieces of crap." Surely, his snarky take on people like Honey Boo Boo and Snooki would be worth hearing.
Robert Pollard
Pollard has always been one of the funniest people in rock, with his drunken comments on stage frequently being one of the most entertaining parts of his concerts. Eventually he realized this, he releasing a "standup" album called Relaxation Of The Asshole. While it didn't quite reach the level of Carlin and Pryor, it was certainly...interesting. Getting 140 characters of drunken ramblings from pollard would certainly be worthwhile.
Neil Peart
To this day, the only person to use the word "unobtrusive" in a song (that I know of, anyway), Neil would be an amazing tweeter for the epic libertarian diatribes he would go on. There's no way he wouldn't end up using Twit Longer half the time, because his insane genius simply cannot be contained in 140 characters. Maybe he could finally tell us what "By-tor And The Snow Dog" is about.

Morrissey
Like I have to explain this one.

Lauryn Hill
If she's not going to go into the studio anytime soon, I'd at least like to see something from one of the great tortured geniuses of the 90s. Surely she's have something interesting to say about the presidential election, or maybe about reality TV. She could pretty much talk about anything and be up to a million followers in about a day. The public is just so starved for anything of interest from her.