[justin66]

> "If the responsibilities for your position include the words 'Microsoft' or 'Windows' anywhere, I am not interested in the position. Please do not contact me."

You're going to hold off the recruiters who conscientiously scan resumes and take such requests seriously at the expense of triggering automated scans for those keywords. I doubt if it's a net win.

[lojack]

Additionally, as someone who isn't a recruiter and doesn't work with any Microsoft products, this might actually come off as a bit of a red flag. The intention may be to stave off recruiters that blindly fire off job postings, but it comes off as egotistical.