It's trivial to get rid of the 140 character limit. I think it took
me about 15 minutes from the time I checked out jaiku's code, found
and changed the 140 character limit in a couple of places, reads the
docs, and uploaded to create
http://tl2tweet.appspot.com/ (it's not a
real service).
I don't have the code near me, but I can send you a diff tomorrow.
Just search the source for both 140 and 141, and you'll find three or
four files to edit. That's all there is to it.