Now one question, when it says it dosen't allow other contextual ads -- is that big companies? What if I have a on-site text advertising -- can they coexist then?
yes, I learned the hard way dont think you can get away with it, however I got a new account so its all good
You can't display them both at the same time but you can use an script that will random the display of the two so that they will not show at the same time.