n March 2004, Yahoo! launched a paid inclusion program whereby commercial websites are guaranteed listings on the Yahoo! search engine after payment.[80] This scheme is lucrative, but has proved unpopular both with website marketers (who are reluctant to pay), and the public (who are unhappy about the paid-for listings being indistinguishable from other search results).[81] As of October 2006, Paid Inclusion doesn't guarantee any commercial listing, it only helps the paid inclusion customers, by crawling their site more often and by providing some statistics on the searches that led to the page and some additional smart links (provided by customers as feeds) below the actual url.