Ever send your mates messages using Twitter's private messaging service, DM's? It that a "YES!"? Great, we do all the time too!
We sometimes find ourselfs sending people messages in blocks of 2,3 or 4, depending on how much you say, of couse! But now Twitter have binned the 140 character limit, you can now send Followers and BFF's as long a message as you like!
Yep, we're jumping for joy about it too!
However, there are no plans to remove the limit in global Tweets.