Login with OpenID
From ThinkWiki
ThinkWiki supports the OpenID standard for single signon between Web sites. OpenID lets you log into many different Web sites without using a different password for each. (See Wikipedia's OpenID article for more information.)
If you already have an account on ThinkWiki, you can log in with your username and password as usual. To use OpenID in the future, you can convert your account to OpenID after you have logged in normally.
There are many OpenID providers, and you may already have an OpenID-enabled account on another service.
