Adware and Spyware Blockers
I would like to tell you the story of a law school student whose dissertation was about money laundering. She frequently used to Google the term to come up with a ready list of Internet references. This proved to be helpful to her and the entire process of writing her dissertation became easier for it. After a few months, she came across several problems like being directed to a page which was totally irrelevant to money laundering every time she entered that search term.