* Allow logged in users to add tags to submissions (maybe after reaching some karma threshold). Tags could either be a private feature, or a shared feature.
* Allow filtering of all submissions by one or more tags
* "Favorites" feature for logged in users
* Allow logged in users to add tags to submissions (maybe after reaching some karma threshold). Tags could either be a private feature, or a shared feature.
* Allow filtering of all submissions by one or more tags
* "Favorites" feature for logged in users