You can exclude products from Yahoo! Shopping by taking them out of your product feed.
Yahoo! Merchant Solutions Customers
To exclude any product in your catalog from Yahoo! Shopping:
Note: If the "in-yshopping" field is set to "Yes" or you have not added this field to your table, your products will automatically be included in Yahoo! Shopping.
Yahoo! Store Customers
To exclude any product in your store from Yahoo! Shopping:
Note: The excluded products will most likely get categorized and will appear in the "Product Status Report" under 'accepted products'; however, the products themselves will not appear live in Yahoo! Shopping.
ProStores Customers
Currently, there is no way to exclude individual product from Yahoo! Shopping.
New! With the launch of a bidded marketplace in Product Submit, there is yet another way to exclude your products in one or more categories from Yahoo! Shopping: Set your current bid for each category you want to exclude to $0.00 (or any value less than the minimum bid for each category).
Please Note: Your current bid for a given category is effective for all products in that category. Therefore, setting a bid below your minimum required bid for a category to appear in Yahoo! Shopping will take all products in that category offline.