Those jokes have been around for years, but they're still really funny. There are hundreds of anti-MS and anti-Bill Gates jokes. One of my favourites is the helicopter joke:
A helicopter carrying several passengers was trying to land in Redmond (home of MS), but a thick low-lying fog prevented the pilot from seeing where he was. Moreover, their radio was damaged and fuel was running low. They circled as low as they dared and after a long time, they saw a tall building rising above the fog.
The pilot hovered near the building, took out a piece of paper, scrawled in big letters "Where are we?" and showed it to the people looking out the window of the building. They responded by displaying their own message: "You are in a helicopter".
The desperate passengers swore at the stupidity of those people but the pilot nodded, smiled and headed off confidently, landing at their destination without hesitation.
After landing, the relieved passengers congratulated the pilot on his skill and asked him how he suddenly knew where to land. The pilot smiled and said,"Well, there's only one group of people who give that kind of answer to a question - technically correct but absolutely useless. I knew those people had to be Microsoft employees who wrote the Windows Help file, and the building had to be Microsoft HQ. From there, I knew where to go."