Googles Contextual Adverts

The concept is great. Google places ad's on web sites depending on the subject of the web page. For example if the subject of the web page is Dogs, the google ad's will be about Dogs, and dog products, food, training etc.

You don't need a PHD in astrophysics to see that this makes good sense. If people are going to look at adverts the best adverts to put on the page are ones that are linked in some fashion to the actual content.

Alas, it does not always give you the results you expect. I was checking my Gmail account today, and decided to see what was in my junk folder...........