QUOTE(floralxprt @ Feb 12 2011, 02:27 PM)
Doing more research. On Jan 30, 2011, I had a bunch of products that were old and no longer available. Each had a sales page, 1 page per product, that my system creates. I deleted the products (which deletes the product sales pages), and then I added them all to the robots.txt so that Google wouldn't crawl them and get a Page Not Found error. I used Xenu to make sure that I wasn't linking to any of these products in content, and cleaned that all up. I also created a new sitemap (both .xml and .html) that I loaded up to the root of my system and published so that Google would find my new products that I also uploaded so I could start selling those.
Could Google be punishing me for this? If so, what did I do wrong?
You should have implemented 301-redirects for the pages you deleted. That is why your Direct Traffic and Referring Traffic numbers went down.