The GPLv3 is important for the battle against software patents. It is also highly vital to the battle for prevalence of Free software. which is why Steve Ballmer (pictured above) looks rather worried.
Sapna Kumar, Duke University Law School Faculty Fellow, discusses the differences between GPL 2 and GPL3 and the threat of software patents to open source projects and developement.
The FSF is not trying to sell anything to you, other than your freedom and rights as a developer and user. ⬆
Do not donate any money to copycat organisations. It's worse than money down the river because your money might get spent attacking and even defaming the originals.