I don't know about the others, but the reason I didn't comment was precisely because I didn't want to log in using Facebook. Your giant trees were blocking my v

I don't know about the others, but the reason I didn't comment was precisely because I didn't want to log in using Facebook. Your giant trees were blocking my view of the forest. Giving the choice between a third-party and a classic profile is the best way to go. It complicates things a bit but no one has a reason not to try your service out.