Hi,
I was playing SuperTuxKart just now, and I noticed somebody recently uploaded an add-on kart with the Microsoft Windows logo as the racer.
To be entirely honest, I did find a bit of humor in somebody trying to upload a quintessential symbol of proprietary software into a game with open-source mascots. But I'm not sure Microsoft would find it so funny if they find out about it.
Since there's a risk this could result in action being taken against SuperTuxKart, I'm thinking it may be a good idea to try to remove this Windows kart from the add-on section. The kart may be a bit funny, but it's probably safer to remove it.
P.S. Long live copyleft