Came back from MIX fiercely addicted to Twitter and Facebook Mobile. Cracked open my laptop in bed this morning, skimmed my Twitter friends RSS feed, and found out a Twitter Mobile launched too. Also found out from Pete's Twitter that T-Mobile released an upgrade for my phone to Windows Mobile 6.
Twitter is changing blogging (and my already unsafe drive to work). However, I'm going to try as long as possible to resist moving from blog posts to short Twitter messages (which, I'm noticing, have a rather low signal to noise ratio). That said, each has its uses.. still figuring out what those are for me.
As a sidenote, Facebook has the best designed mobile site I've ever seen. They truly get what info and features is useful on the go, and what isn't. Their interface is littered with examples -- here's one.. when you accept a friend request from your phone, they don't bother you by asking for friend details. Instead, next time you sign in to the site from a PC, there's an unobtrusive reminder in the right-hand column where you can add friend details for the friend request you accepted while on the go. Smart.
Also tried Joost this morning. Very slick.
Update: Get your Joost invite here.