Hi Emily! I'm happy to see how Jeff is doing it. I piped up only say thanks for offering more than one choice, after noting that Blue Oregon went Facebook only. As long as we are going to be relying on private companies to validate identity, options are important. For various reasons I've myself chosen Twitter as a general social identity - it's remains the least intrusive claimant, I think. But it would be as much of a mistake to go Twitter only as Facebook only.