They don't answer emails - kind of a bummer to put your money into an online bitcoin wallet and not be able to take it out.<p>I gave them some benefit of the doubt by their link to YC, but this is pretty sketchy
Coinbase is still in beta, and a lot of stuff probably doesn't work. Give it some time.<p>Otherwise I would recommend grabbing your own copy of the bitcoin wallet. Legally you should be fine.