I am appalled that you people would make your textures using an internet site
Also, I'm great at creating textures from scratch. You want me to make a tut or help you?
You'd be suprised. Hell, alot of companies even farm out work or buy DVD's of props and textures.
Some of the stuff in GoW I know for sure was made by a company in the netherlands.
There was a farce awhile back with an HL2 du/dv map found in stalker and some doom3 lights as well, turns out that they had all used some stuff from asset dvds and had happened to have used a few of the same textures.