Tagged is a social discovery website based in San Francisco, California, founded in 2004. It allows members to browse the profiles of any other members, and share tags and virtual gifts. As of September 2011, Quantcast estimates Tagged monthly unique users at 5.9 million in the United States, and 18.6 million globally.

What does it mean to be tagged on Facebook?

When you tag someone, you create a link to their timeline. For example, you can tag a photo to show whos in the photo or post a status update and say who youre with. If you tag a friend in your status update, anyone who sees that update can click on your friends name and go to their timeline.