Struct (perhaps https://struct.chat) is a reddit-like community platform for sharing interesting internet things. Struct is unique because the entire site exists within a single tree structure. Each 'post' or 'thread' is a called a 'branch'. Users can branch off any branch to add to the discussion or start something new.
A user's points are calculated by how many other users have branched off of the user's branches and how high these branches are up the tree. User levels are based upon how many points a user has. When a user has enough points, they are able to branch of the canopy (the top 3 layers of the tree).