[OpenID] Flickr / Yahoo OpenID implementation

[Allen Tom]

Allen Tom wrote:
>
> After reading this, you're probably wondering why this is so 
> convoluted. When we launched our OpenID service a year ago, we were 
> required to issue machine generated OpenIDs (the ugly hashed ones) to 
> users by default, unless they explicitly asked for a  personalized 
> identifier.  Our lawyers also insisted that all Yahoo/Flickr users who 
> wanted to use their account as an OpenID explicitly enable their 
> account for OpenID and agree to a new Terms of Service. The whole User 
> Experience (UX) of enabling an account for OpenID, agreeing to a ToS, 
> and then selecting a personalized identifier proved to be a horrendous 
> UX with very high dropoff rates, which we formally studied, 
> documented, and released to the OpenID Community here: 
> http://developer.yahoo.com/openid/bestpractices.html
I'd like to add that based on our UX research, we streamlined the UX 
flow on our side to get first time users through our provisioning 
process and back to the RP as quickly as possible. We found that the 
majority of users just wanted to sign-in to the RP and didn't really 
want to setup a customized identifier. In order to streamline the flow, 
we de-emphasized the ability to setup a customized OpenID (which 
includes Flickr OpenIDs).

Allen

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