Longer Tweets on Twitter. Based on the idea tweeted by Paul Haddad.
Evil TweetLonger alternative. Encode the text as part of a URL. Clients parse the URL to reconstitute the Tweet. Server wouldn't need a DB.
With Verbosity, you can host your own Tweet extrapolator on your GitHub pages.
Of course, it's the wrong thing to do, so go ahead and don't do it. Oh, but you are such a special snowflake. 140 characters couldn't possibly contain your genius, so fork Verbosity and tweet your a manifestos.