Microsoft grants a free license for a mountain of network protocols - provided that signatories commit to never working on Open Source projects. The tricky part: Microsoft grants licenses to protocols that don't even belong to them - such as TCP/IP, AppleTalk and ZModem. A subtle hint in the description text points out that you should get other licenses for the protocols that Microsoft doesn't own. Sorry, Microsoft, but the license isn't even worth using as toilet paper.