I noticed something interesting the other day and since then I've seen it more and more. Lets say you go to a site on Forex - currency trading - and THEN you go to some other site in a totally separate niche, lets say birthday supplies for example, G00gle will serve some ads for FOREX even though the birthday site has NOTHING TO DO WITH FOREX! Has anyone else noticed this (or perhaps I'm just late to the party on this one). This may have some ramifications for SEO, perhaps both good and bad. The pay will be higher if Forex adsense clicks are $$$, especially on a birthday site with low paying clicks for instance. On the other hand, it would be bad for an optimized keyword rich Forex site if there are birthday supplies ads since the visitor was on a few birthday sites prior to visiting and thus showing LOWER $$$ adsense ads to the visitor based on G00gle profiling the visitor. Thoughts?