Call me crazy but I think that computers volunteer way too much fuggin information when connecting to websites. User agents as we know them shouldn't exist, the website should have no DAMN clue what kind of device I'm using.
I've always been creeped out by stuff like that old form signature that would show what your IP is and stuff, i always hated how the facepunch forum would expose your OS for no real reason and you cant choose not to display it.