I think you missed the point. If I can use any OpenID provider I can use my Google, Twitter, Yahoo (but NOT Facebook accounts, very intentionally [it used to be

I think you missed the point. If I can use any OpenID provider I can use my Google, Twitter, Yahoo (but NOT Facebook accounts, very intentionally [it used to be an identity provider but they removed it when they introduced Connect]). But more importantly, if it's generic OpenID/BrowserID, I can truly own my identity. As long as Facebook continues to get their proprietary tentacles in everything, they continue to own my identity and make me indebted to their stewardship. If it's my http://firstname.lastname.com http://firstname.lastname.com OpenID identity, I will always own and control it, even if Zuckerberg goes off the deep end and tracks me even when I'm not logged in and shares these details with non-Facebook sites, etc.