>>2163
Basically mods on PC games (which are generally fan-made) that were previously free were given a price tag. A portion went to the person who made the mod but the lion's share went to Steam themselves.
Pretty much all the major gaming communities were outraged by it and Valve decided to remove the price tags on mods.
It's why you'll be seeing a drop of user count on /scurv/, but I'm thinking it'll still have a place on the top 25 for a while now, but only in the lower tiers.