The FSF -- Free Software Foundation -- has raised an issue with the iTunes terms of service relating to the game GNU Go, which uses GPL code. The foundation suggested that the terms of service 'fundamentally conflict with the terms of the GNU Public License' according to arstechnica, and resulted in Apple's removal of the game from the store. The foundation had warned Apple that it was liable to comply with GPL terms that allow free sharing of code, stating that Apple's usage rules were in violation of the terms in regard to GNU Go.
