Even with all the profiling the ads still suck.
It amazes me how little insight all this profiling actually gives advertisers. Sure they advertise stuff to me that I'm already searching for, but advertising is supposed to be about brining in new customers. Not advertising a product to me after I've already decided what I want, searched for it, and bought it (or decided I don't want it).
I get ads for weeks after that are a complete waste of the advertiser's money, LOL. I don't think I've EVER bought something online that I didn't know I wanted until I saw an ad...