Even though I prefer mercurial to git, Bitbucket could get a lot of converts if they started supporting git. Bitbucket is not the serious competition that I'd like to see Github get. For developers that prefer Hg to Git, Bitbucket has to compete with Google Code, Codeplex, and others...

April Fools:

http://blog.bitbucket.org/2009/04/01/announcing-git-support/