Web apps/services go down for maintenance (expected or erroneously) all the time.
What happens when your “sign on to all apps everywhere” OpenID server goes down for an hour? You might not be able to login to any site.
Your users may not be able to log into YOUR app.
MyOpenID is going down on the 12th of September (see below) for an hour.
Even if they have clicked “Allow Forever”, and it appears that they never revisit their OpenID provider again when logging into your site, they actually still do via the wonders of HTTP redirection, and those zippy quick InterTubes we take for granted.
Supporting multiple OpenIDs in your app isn’t much more effort than supporting one OpenID. You just need an extra table and a form for creating them.
The Plaxo article on multiple OpenIDs per user kind of makes it all appear a bit daunting, IMO.
But with the sweet Ruby OpenID gem and starting points like Ben Curtis sample app or my multiple-openid sample app, it might take only a 1/2 day or a day to educate yourself about OpenID, and hack it in to one of your apps.
Say, like your blog. Please.
This is a notice that MyOpenID will be having a maintenance
outage starting at 08:00 on 2007/09/12, Pacific Time.
The outage may last as long as 60 minutes, but is expected
to be considerably shorter.
The reason for this outage is:
During the outage, the MyOpenID website may be unavailable or
unresponsive, and users will be unable log into OpenID-enabled
websites using their MyOpenID accounts. The latest information about
this and other MyOpenID events can always be found on
We apologize for the inconvenience. If you have any questions, please
contact us at email@example.com.
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