I have a site that is now 2 months old. The index page has been listed in yahoo for about a month now. The site has been crawled 580 times this month (it has about 500 pages total) and has gone from just the index page to 4 pages with a lot of incoming links and a product pages with none. I know they take a while to usually fully index a site.. but i've never seen them slowly add a page or two at a time.. very frustrating