I was just looking at a URL posted at dfpug, when Opera puts two "relevant text ads", i.e., ads related to the content of the Web site. Mainly out of curiosity - because it already looked suspicious - I looked at the two. Pyramid schemes (or multilevel marketing), both of them. Yech.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)