Social Sign In lets visitors register using existing Facebook or Twitter profiles. With just two clicks they can be logged into your site - ready to contribute and share content.

Once they've joined, they can opt to have their Twitter or Facebook profiles automatically updated when they publish a blog, post a forum topic or join a group. This way all their friends and followers get to see your site's content and activity.

People who don't have a Facebook or Twitter account can still register using their email address.