How to distinguish/identify users with OpenID without requesting SReg fields?

Skimming the code, I think it's $oid_response->identity_url that you want. For me (albeit in DotNetOpenAuth not php-openid) that comes back as.

The problem was that Google's OpenIDs are Unique Per-Domain; I had been absent mindedly alternating between http://www.mysite.com and http://mysite.com, which caused the OpenID identity url to change!

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.