What is going on ? There are plenty of "open" "decentralized" "single sign on/authentication/trust" frameworks already ... Wouldn't it be better to choose ONE and support it ? There is a case for a generic "open identification" system but as far as I can see, OpenID, Shibboleth and Higgins are kind of implementing the same pattern, just with different technologies. Phil Becker makes an interesting statement in his article, but I don't know where is the proof that "OpenID has a much lighter cost structure than any alternative."
From what I've seen on their websites, Shibboleth is the one with the most advance in terms of trials, wouldn't it be a better investment to support it rather than to create competing frameworks ?