This second generation practice of sharing contributed to the battles of free and open software. In fact, when Bill Gates' version of BASIC for the Altair was shared among the hacker community, Gates claimed to have lost a considerable sum of money because few users paid for the software. As a result, Gates wrote an Open Letter to Hobbyists. This letter was published by several computer magazines and newsletters, most notably that of the Homebrew Computer Club where much of the sharing occurred.