BillyS: My profits increased because of the update, but from my understanding today from my stats is that less important keywords got sacrificed in exchange for more relevent ones leading to higher conversions (cant complain there). Also at the same time I lost some overall unique traffic (no big deal). PS: Im tired at looking at wiki and that esite also.
AlyssaS: I have at least 5% of my pages with large ads inside the content area plus large ads at the top and bottom of those pages and saw no loss to traffic to those pages after the update last week. However, these pages have a large amount of content in them. If there is a trigger there it might have something to do with the amount of content to ad ratio.