 In May 2017, Valve claimed that these "fake games" harmed Steam by feeding "faux data" into the storefront's algorithm, which resulted in asset flips being granted a disproportionate amount of storefront exposure relative to the number of people actually playing them.To counter this, Valve implemented a "confidence metric" system, wherein trading cards can only drop for games which pass a sales threshold.In September 2017, Valve ended their business relationships with Silicon Echo Studios, who were implicated in an asset flipping scheme involving numerous developer accounts managed by the same person.