I love twitter as I've always been too ADD to blog or even to keep a facebook/myspace/whatever updated (and your blog is usually the longest thing i read daily).
Short forms can be really great. I recently discovered vvork's twitter feed, which posts a short description of every art piece they post at their website, and I've found it to be the ultimate source for art news (for me). At a time when there is so much art everywhere and it all demands so much attention by having lenghty discourses behind it (or, if it doesnt, leaving you pondering for a while at where the knack is), it's amazingly refreshing to just read something like
vvorkconcentric rings of biomorphic colored plastic (?) on gallery wall with stonehenge reference in title
vvorkphoto of anti-coal protesters
and imagine the rest by yourself, without any pressure. It is better than purely conceptual art because you know there is a piece out there representing it, but you are not burdened by having to see it, having to judge whether it was worth the effort, having to judge whether it deserves a place in the world.
I also followed allan mcgee for laughs for a while during the whole brian eno thing, but he is terrribly annoying and Im gonna unfollow him right now