I personally use Twitter almost entirely from my mobile phone (though it needs to be one able to run Java): I use Opera Mini (effectively a desktop browser for mobiles) to view http://dabr.co.uk , which is designed specifically for mobile use.

Actually I find Dabr a better interface than the official site when I’m on a PC, too, so I only go to twitter.com if I want to update my profile.

I think the number one rule for using Twitter is: don’t access it from the official site! Access it from one that works.

Though if your phone is a rather old one, you might still have difficulties. (Mine is oldISH: a Sony Ericsson k750i.

I have to say, though, I absolutely don’t experience Twitter as reading lots of people’s monologues, interior or exterior: I experience it like a cross between a slowed-down chatroom and a speeded-up bulletin board, with a constant interaction and exchange of ideas.