I have been noticing more and more serialized tweets. In other words, someone tweets several times in a row because what they have to say will not fit into 140 characters. They number them and fire them off one after the other. That way you, the reader, can reassemble them in your head. Of course the arrive in reverese order (the newest ones are the last one.) Also you need some way to note that your series is over, which might beget a new twitter shorthand <EOM>
Why, if I can attach a 5 minute video or a photograph or a 3 minute mp3 to a tweet, can't I attach a 2 paragraph messge? Why not allow me to have as much text, and why not fonts and styles? It's just a matter of time.
The 140 Character Limit was the gimmick that differentiated Twitter from all other messaging platforms at the time. But we in a new era now. Twitter has established itself. Your twitter handle has become almost as self-identifying as your actual name (or maybe more so, because it is guaranteed unique, world-wide.)
It's a totally natural set up for the ultimate, universal, blogging platform. I see that happening.
Someone said, Twitter is trying to become more and more like Facebook, and Facebook more and more like twitter. And both are the worse for it. Maybe when Twitter starts accepting long messages people will say that Twitter jumped the shark. I doubt it. I think it's inevitable.