publish games on Steam with minimal oversight from Valve, journalists have criticized Valve for lacking curation policies that make it difficult to find quality games among poorly produced games, aka "shovelware". Following the launch of Steam Direct, allowing games to be published without Valve's curation, members of the video game industry were split on Valve's hands-off approach. Some praised Valve in favoring to avoid trying to be a moral adjudicator of content and letting consumers decide what content they want to see, while others felt that this would encourage some developers to publish games on Steam that are purposely hateful or degenerate of some social classes, like LGBTQ, and that Valve's reliance on user filters and algorithms may not succeed in blocking undesirable content from certain users. Some further criticized the decision based on the financial gain from avoid blocking any game content, as Valve collects a cut from sales through Steam. The National Center on Sexual Exploitation denounced the policy for avoiding corporate and social responsibility "in light of the rise of sexual violence and exploitation games being hosted on Steam". Sector competition and retailers boycott Steam was estimated to have the largest share in the PC digital distribution market in the 2010s. Competitors emerged with Games for Windows – Live in 2008 and Impulse in 2009, both of which were shut down in 2013 and 2014, respectively. In 2013, sales via the Steam catalog are estimated to be between 50 and 75 percent of the total PC gaming market. In 2010 and 2013, with an increase in retail copies of major game publishers integrating or requiring Steam, retailers and journalists referred to the service as a monopoly. They purported that having such a percentage of the overall market can be detrimental to the industry and that sector competition would yield positive results for consumers. Several developers also noted that Steam's influence on the PC gaming market is powerful and one that smaller developers cannot afford to ignore or work with, but believe that Valve's corporate practices for the service make it a type of "benevolent dictator", as Valve attempts to make the service as amenable to developers. Because of Valve's oversight of sales data, estimates of how much of a market share Steam has in the video game market is difficult to compile. Stardock, developer of competing platform Impulse, estimated that as of 2009, Steam had a 70%