Nuclear has launched his own Portal 2 leaderboards, which you can find here. Most of the features are aimed for some of the best speedrunners, but anyone can use them to quickly get to the Steam leaderboards or to check the current world record.

There might be more features in the future. That depends on the feedback Nuclear will receive so I am trying to help him by sharing this website with you.

Once again, direct link here: http://ncla.me/leaderboard/