EULA, you know, those software End User License Agreements you click "yes", saying you read and agree to the terms, but in truth you never read at all.
Nothing ever comes of it so why bother reading them anyway?
Well nobody reads those things except hackers and people looking for another reason to badmouth Microsoft or some other evil corporate entity.
But EULAs come with more than software, they come with other things like music.
This is where they can bite you on the butt, as so many people have discovered, courtesy of the Recording Industry Association of America (RIAA).
People seem to think that EULAs are a spawn of the digital age... not so.
See, 'ol Tom Edison himself put a EULA on his prerecorded cylinders, but I get the impression Edison was more concerned with keeping the price of his product up than any pirating.