If you're a Yahoo! Store, there are two ways to get your products listed in Yahoo! Shopping. Current Yahoo! Store merchants can continue to participate in Yahoo! Shopping by opting into Shopping within the Store Manager tool. You'll continue to be charged the appropriate network revenue share fee.
If you upgrade to the new Yahoo! Merchant Solutions service, you can opt in to Yahoo! Product Submit by simply clicking the " Yahoo! Shopping" link under "Promote" from your Store Manager tool. Your product data is pulled from your store, and Yahoo! also categorizes your products into Yahoo! Shopping categories as a default. Instead of being charged a revenue share fee, you're charged only when someone clicks a product listing that takes him/her directly to your site. Click here to learn more about Yahoo! Product Submit.
Or you can submit your site to be crawled with no guarantee for consideration or inclusion in Yahoo! Shopping.