dudibob - 12:31 pm on May 21, 2008 (gmt 0)

I look after a network of sites, all with banners ads using obvious tracking URLs and the rankings on the whole haven't been affected too much, a few single word terms we've flown up and dropped down a few as the most notible.

Are you sure Google might be thinking your pushing the ads too hard and made people suffer or could there be coincidences of something else?