>Will we ever be able to upload screenshots into a message? Right now, when I want to show a screenshot with a message, I post my image somewhere else on the internet, like this: http://twitpic.com/10du6/full and then include a link to it in my message.

It is something that I really do not know at this point. It has been requested at a few occasions but its support is something that would need to think more about.