Around Memorial day I took a big hit in traffic and sales. I'm trying figure out if it due to the Google Sandbox effect or some new duplicate content filter, affiliate site filter, parasites etc...

I almost never use scripts like Davids "out of the box" and try to set my sites apart form others that use the scripts.

What are others seeing ?

David -
Since you must have a large number of sub-affiliates are you seeing any trends ?