So I've succumbed to the meme, and joined the Twittering masses. Like Matthew I'm probably the wrong generation, being ancient enough to be Nathan Barley's dad, and experienced enough to remember life before Web 0.0 (shudder).

First thoughts:

• Restraint is a wonderful thing, it's too easy to think of Twitter as IM and fling open the kimono like a dirty mac.
• It's micro-blogging, innit? The whole post-a-phrase is not unlike Gustaf's observations category. Should I integrate my Twitterings onto this blog in a daily summary? The jury's out on that one for now.
• Multiple entry methods are good; web, im, sms, api, pick the ones you want to use.
• It's not very interactive, a few times I've wanted to directly reply to someone else's Twitterings on Twitter, and the direct reply documentation is a little hidden away. I wish I'd spotted that earlier.
• It's too easy to forget that a friend's Twittering is not public, in fact I don't know of an easy way to discern the intended visibility of a friend's comments. Beware.
• IM is Jabber/XMPP - hurrah, sanity! It also means Twitter doesn't suffer from the problems that IMified are suffering with MSN, dead-end locked-in IM systems, just say no.
• There's a few services that use Twitter a little like an aggregator, I'm unsure whether this is a good thing. Although any service that embraces bots has to be good, no?
• OpenID is conspicuous by its absence