I'm really liking the 500-character limit here.
It just gives more space, when you need it, to chat in a conversational manner and expand upon some ideas.
Of course I've been trained up by The Other Place to be very pithy and cutting when I need to... but I'm rather enjoying the ability here to just stretch out my legs a little more comfortably on these mini-blogs. It feels nice.
@mikegalsworthy yup, I never could get on with 140 characters. 280 was reasonable.
Though looking at this screenshot, I think it looks as though it's a lot higher for the server I chose almost blindly