I once heard a story about customized Google searches, quite possibly not true, that really made me laugh. Someone was at a conference about racism/sexism and the speaker said, among other things, that even Google was racist because whenever he started to search for "black women" it would suggest "black girl porn" after he had written the word "black". Wanting to see this for herself a member of the audience tried it on her home computer only to get completely different results. She then realized that it only did it for the speaker because he was always searching for "black girl porn" and so Google assumed he would again.
[If this story came from SGU I'm going to feel really foolish.]