Launch your Web browser, and navigate to siteexplorer.search.yahoo.com.
Type the full address for your website or blog into the input field on the Yahoo! Site Explorer homepage. You don't need to include the "http:// " prefix, but do include the "www" part of the address.
Click the "Add My Site" button. When prompted, enter your Yahoo! username and password. If you don't have a Yahoo! account, then click the "Create New Account" button and follow the on-screen prompts to open an account.
Click the "My Sites" link in the left-hand menu.
Click the "Explore" button beside your website address in the main window.
Click the "Inlinks" button on the top menu. This displays a list of all incoming backlinks to your website.