The last 7 - 10 days has been pretty bleak, sales have really dropped off where traffic has not. Interestingly, on two sponsors that show "sales rank" my position has not greatly changed with the drop in sales, which tells me that EVERYONE would have seen the same drop in sales in those programs.
As Jim said, some of it is certainly the summer drop off.
However, some sponsors have either pulled sites, are redirecting traffic, or have redesigned tours in a hurry. Redirections and such are a pain, you send a guy expecting "this" and he gets "that". More than likely he isn't a buyer for "that" so you just wasted a click. The new tours are a really big issue as well, as some have gone totally softcore, and others are using designs that have not been completely tested. Conversions drop, and away we go.
I saw better sales yesterday, and today so far isn't terrible, but that is normal summer action as well.
Oh well. Only 2 more months until school starts again.
Alex