Did you know you can use your account on www.grin.net as an OpenID authentication source?

To use grin.net as openID authentication, supply a URL similar to the following (I'll explain that momentarily) to an OpenID enabled site:
http://www.grin.net/users/<userid>

Where <userid> is your username on this site.

I use the url http://www.grin.net/users/shadow for example, but if your name is 'johndoe', you would use:
http://www.grin.net/users/johndoe