If they would have used the Firefox extension Track Me Not the profiling of those searches would be way harder. Instead of using proxies and other methods to avoid detection the track me not extension sends periodically bogus searches to major search engines. The main goal of track me not seems to be to avoid the profiling of users by search engines. It is hard to say what they actually do with the data but a possible scenario could be that they either sell the data to marketing companies or use the data for their own marketing purposes.

Track Me Not runs as a low priority background task in firefox “that periodically issues randomized search-queries to popular search engines, e.g., AOL, Yahoo!, Google, and MSN.” Track Me Not is currently able to generate three million static querries and further versions will most likely generate the fake searches dynamically to further improve this method.