[OpenID] Correlating Identifiers

[Nate Klingenstein]

Allen,

Very interesting -- I didn't know this.  I guess that your  
applications were already well-experienced with pseudonyms through  
your proprietary SSO, so you've had no problems with the opaque  
URL's.  If only we had trained our apps so well long ago.

Thanks a lot for the details on the history and rationale,
Nate.

On 6 Nov 2008, at 00:06, Allen Tom wrote:

> Prior to launching our OpenID service, Yahoo's policy with our  
> proprietary SSO service was to issue RP-specific identifiers to  
> prevent RPs from sharing data about the user and correlating user  
> behavior across different sites.

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