In the last 12 months, Google has done a superb job of crawling and indexing nearly 17,000 out of 20,000 of my site's pages. On the other hand, Yahoo indexed approx. 500 up front and hasn't indexed anymore. I've paid $300 to be included in the Yahoo directory. I've used Site Match with practically no results. I've managed pay-per-click campaigns via Overture with very few clicks and fewer sales. I'm at a loss on how to improve the number of pages that Yahoo organically indexes. Does anyone have any suggestions?