A user on WeChall can indicate which challenge sites he/she plays at with a specific username. Challenge sites can be selected from a simple drop-down list. His/her profile page will then contain an entry for this specific challenge site with the given username, along with some text describing how high he is ranked at that site. This will give a complete overview of one user in an instance. The goal is to make a global ranking for challengers. Also we like to give an overview of popular challenge sites, and encourage challengers to try them out.