Re: Alternative to Facebook
I couldn’t access the link. Chris’ site just keep trying to load and then threw a 503. I’ll try again later.
In general, as you know, I have issues with using OpenID in a distributed environment because it requires a lot more server calls and a 3rd-party provider / verifier. This basically locks individuals back into the same mantra of depending on another provider. Decentralized services are best, IMO, managed and controlled by each individual. This is where FOAF+SSL-backed WebID shines. It does not require a 3rd-party authenticator and the process takes significantly fewer steps.
Of course, that does not preclude offering both options–the Open Stack and their SemWeb counterparts.