2014-02-21 UTC
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gRegor` Raymondo: web sign in is a way for you to use the login system of popular services like Twitter to authenticate to a site. If your domain links to your twitter with a rel="me", then you can log in on the wiki by entering your domain name. The authentication process looks at your domain, sees that rel="me" link, then goes to twitter to verify you are logged in there. If you are not logged in...