OpenFeint was founded by the same guy who founded Discord.
From the Wikipedia page: "In 2011, OpenFeint was party to a class action suit with allegations including computer fraud, invasion of privacy, breach of contract, bad faith and seven other statutory violations. According to a news report "OpenFeint's business plan included accessing and disclosing personal information without authorization to mobile-device application developers, advertising networks and web-analytic vendors that market mobile applications"."