RMS Weighs In On SPF/Sender-ID License
Stallman's message continues: "The Microsoft license for Sender-ID directly forbids release of software with all these freedoms, so it is impossible for any program to be free software under Microsoft's regime. I've been expecting to see something like this ever since Gates started talking about spam. This license is an example of Microsoft's strategy for killing off free software as an alternative to Windows. Microsoft first patents something, then incorporates it into a format or protocol, then tries to make it de rigueur while excluding those it wishes to exclude. In the absence of resistance, Microsoft has a good chance of imposing whatever standards it likes. Let us, therefore, resist it here and now."
Look at what SCO is doing now, claiming to own ELF, using that as an attempt to demand money from Linux users. If we let MS's non-open "standard" become a real standard they'll wait a few years until everyone depends on it, then use it as a weapon to try and crush competition. I'm not being paranoid here, I'm simply extrapolating from MS's history; they do that sort of thing on a regular basis.
"Mission Accomplished" -- George W. Bush May 1, 2003