Wolfire Studios estimate that 25% of the traceable downloads have come from software piracy by links provided in some forums that bypass the payment screen to access the games; Wolfire further surmises additional piracy occurred through BitTorrent-type peer-to-peer sharing services.[12] Rosen noted they purposely removed much of the DRM associated with games to appeal to those that would otherwise engage in software piracy, through both having the games ship without DRM and by having only limited copy protection on their website.[12] Rosen also stated that for about ten users that emailed Wolfire about being unable to pay for the software, he personally donated on their behalf.[12] Rosen comments that there may be legitimate reasons for those that appear to be pirating the game, including the inability to use the payment methods provided or that they had a made a single large donation for multiple copies.[12] However, he also considered that there are players that would simply forward the download links to "take pleasure in spreading the pirated links to their friends or anonymous buddies for fun".[12] While aware of the presumed software piracy, Rosen says that Wolfire will take no steps to limit it, believing that "making the download experience worse for generous contributors in the name of punishing pirates doesn't really fit with the spirit of the bundle".[13] Rosen noted that by offering the source code of the games as an incentive, they would hope that "the community will help build them up with the same vigor that crackers tear DRM down". David Wong of Cracked, in considering several reasons for the negative stereotypes for video game players, used the Humble Indie Bundle as an example of demonstrating the "sense of entitlement" that some video game players have, pointing to the high rate of piracy and use of bandwidth as alternatives to spending "even one penny".[14]