How else are they going to verify you're a "talented hacker"? When most resumes are available publicly on any personal website (I'm making an assumption), it doesn't seem like too much to send.
this is basically my point. The things you look for in great programmers are not the same things you look for in finding great people to spend a weekend with. In order to make this a truly great experience they should put some time into finding a way to make good matches both in start-up-employee-potential and enjoyable-person-potential.