Re: Death to advertisers!
Before I got totally hacked off and started blocking ads (I think it was an autoplaying IBM ad on El Reg that was the last straw) I was always bemused by so called "targeted" ads. They were always for something I had already looked at. Showing an alternative product to one I had looked at would make sense, or a different store, but not the exact same product and store I had already looked at.
"You looked for X on Kogan yesterday. Here is an ad for X at Kogan."