"This is user's URI" for Assertion Quality Extension

[Martin Atkins]

SitG Admin wrote:
>> What's the use-case?
> 
> If the RP doesn't care about distinguishing between users that have 
> accounts at a site but identify themselves as such anonymously, it can 
> reclassify them as "users that have accounts at a site", consolidating 
> what could be a large number of identities into a single account. (This 
> is largely a convenience for the Relying Parties, reducing database 
> clutter but perhaps the performance hit wouldn't be noticed anyway?)
> 
> RP's may want to discriminate between users that use a "real" URI and 
> those that only use OpenID anonymously, just as users may want to 
> experiment with new sites using a unique (randomly generated) URI that 
> can't be associated with their accounts elsewhere, and then use their 
> main URI if they decide they like the RP's services. (I'm hoping that 
> others here will volunteer their own specific use-cases or what they 
> *could* do with such information were it asserted by an OP.)
> 
> One form of discrimination could be encouraging users to have a "real" 
> URI by giving them more features - reward them for adapting to the Web 
> 2.0 model and using their OpenID around the web. Another could be 
> swifter expiration of new accounts under the presumption that new users 
> who use an anonymous URI are just experimenting with the service (this 
> would be both a performance convenience for RP's as described above, and 
> a complement of the encouragement more immediately above, instead 
> *dis*-couraging users from using an anonymous URI for long-term use). 
> (Since a user could still create multiple accounts on one or more sites 
> and use each of them as a "real" URI; such discrimination wouldn't 
> reduce the user's ability to compartmentalize their identity and 
> maintain privacy.)
> 

All of your use-cases here seem to be to do with the RP somehow 
discriminating against users that have a flag set. With that in mind, 
what's the incentive for the OP to actually set the flag?