Okay, I don't make it practice to direct link from Adwords or Overture via an affiliate link; I usually build a feeder site of some sort. However I've had good success doing this on Google for a clickbank site. I want to add my keywords that are working well onto Overture but I can't remember if they accept direct affiliate links or not...does anyone know off hand?
Overture is generally very picky about landing pages, and will not allow affiliate links unless the fact that you are an affiliate (and not the main merchant) is clearly stated in the copy.
Damn...this is one site that converts well on the landing page....this is the one case I think a feeder site would reduce conversions by less click thrus. Oh well....thanks for the info.