Facebook is the defacto. About.me along with its slew of clones are the long tail. Think about it... certain demographics around the world all recognize the Fa

Facebook is the defacto. About.me along with its slew of clones are the long tail. Think about it... certain demographics around the world all recognize the Facebook logo. Certain demographics will recognize the utility of a Facebook profile. Certain demographics will accept your Facebook login to exchange for access. Month by month that legitimacy will only grow. Your "hood passes" are different. Who's the custodian of how long you've been on Reddit? How much karma you've gotten on Hacker News? How much influence you have on Twitter? How many followers you have on Tumblr? Some roll their own with their own domain name while most others end up using About.me. oAuth has a lot of your data too, maybe it's a matter of timing before someone takes that, make it into a legit passport service and sell it Google. Or Microsoft.