Simply put: that's a risk you take for being an early adopter. Deal with it, there's a good chance it will happen with any/all early adoption startup products out there.
How is that "a few years"?
(Granted, October of 2010 still isn't ‘a few years’ a go.)
[1] http://blog.sparrowmailapp.com/post/1262858384/40-000-sparro...
[2] http://blog.sparrowmailapp.com/post/2497742134/150000dwnlds