actually holy fuck you just gave me a great idea..
If i collected ip sets and correlated them by what they were looking at, i could build a great database, then sell the ability to target your surfers more effectively..
So basically like a random banner script that displays a banner based on what ip the surfer is using, if the database contains information about that i.p. and what he/she may like to see, it will display an ad based on that surfers viewing habits.. If it doesnt contain information it displays a random banner and starts collecting information on what they click for the database.