He's correct that repetition does drive things into our memory. This is the whole idea behind 'behavioral advertising' (google it for full explanation). The th

He's correct that repetition does drive things into our memory. This is the whole idea behind 'behavioral advertising' (google it for full explanation). The theory: If a user has visited Amazon.com and browsed Digital Cameras lately, I'm going to drop a cookie and pass that to my ad server so that whenever he goes to Dictionary.com, I can show him an Amazon.com Digital Camera ad. It's quite effective (has worked on me before).