You’re about to create a new login for a site you’re likely to visit often. You can submit your email and password and probably fill out a longer form or you can click to hook your account to your Facebook profile. Which would you choose?
Last year, I would have chosen to fill to fill out the form, no matter how lengthy because it just felt wrong giving everyone access to my Facebook account. Now. . . not so much. Yesterday, after reading a post on the Facebook Developer Blog, I paid attention to my logins and found that I was using a Facebook for the majority of my routine logins.
The upside is obvious. It’s fast and you don’t have to remember your username or password or which email you used to sign up.