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

Remember, you'll still need to sign up for an account with each site, but you can then link that login with your grin.net login via OpenID, and from then on, you'll only need to log into grin.net to log into every site you link to your grin.net OpenID.