When Nintendo's Wii fighting game Super Smash Bros. Brawl launched in 2008, it was touted for its user-generated stage designs and replay data. That service, sadly, will soon cease. From the game's official website:
As of June 30th, 2009, the current service that accepts user-generated snapshots, stage designs, and replay data will no longer be available. Please note, however, that we will continue to distribute such data after that date.
An explanation as to why Nintendo decided to end this service was not provided.
Smash Bros. DOJO! [Official Site Thanks, Steven!]