Whenever I used to demo one of my old projects, the immediate feedback I'd get from most "advisors" was something along the lines of, "oh, you don't offer Facebook signup. Why not?"
I think the underlying assumption was that using Facebook login would make it easier to make the site "go viral" because we could more easily spam our user's networks.
I always cringed at this idea from my own personal experience, and from anecdotal evidence from my friends.
I'm very excited that someone finally backed this up with data.
And at least by offering it, you'd get metrics on how many people use it. Like Patrick said, it's the most important 30 seconds of your relationship with the customer. It's worth trying whatever you can do to improve that signup process.
I think the underlying assumption was that using Facebook login would make it easier to make the site "go viral" because we could more easily spam our user's networks.
I always cringed at this idea from my own personal experience, and from anecdotal evidence from my friends.
I'm very excited that someone finally backed this up with data.