Sorry that has been the acronym for Microsoft for a good 20 years, especially in Linux/Open Source circles. Sorry I was not trying be clever. I certainly never invented it's use.
M$ = Microsoft isn't seen as the best. Here is conversation on Stack Overflow. http://meta.stackexchange.com/questions/6185/is-m-for-micros... Guess the days of referring a negative point of view towards Microsoft or a Microsoft IT Department isn't accepted anymore by using communicating this by M$.
I blame the stupid text message - script kiddie leet speech that came afterwards destroying this practice.