The Mono project aims to avoid infringing on any patents or copyrights, and to the extent that they are successful, the project can be safely distributed and used under the GPL. On November 2, 2006, Microsoft and Novell announced a joint agreement whereby Microsoft promised not to sue Novell or its customers for patent infringement. According to a statement on the blog of Mono project leader Miguel de Icaza, this agreement only extends to Mono for Novell developers and users. Because of the possible threat of Microsoft patents, the FSF recommends that people avoid creating software that depends on Mono or C#.