Not sure if I’m late to the party on this one but I just noticed that Yahoo offers this page that lists all of Yahoo’s seach services. The page has a section for searchers (links to tips, options, Yahoo Next, etc.) and another set of links for “site owners” (webmaster info, ad info). The page also has a links to the Yahoo Search Blog, job openings, press mentions, and more.
Don’t forget that Yahoo also offers this A-Z index of their entire range of services.
Yahoo and Bing are reportedly testing out changes to search functionality that make results more "card-like" and move top navigation below the search results box.
In the past year, Bing has added features like product ads, auto-tagging and online insertion orders to make it easier to advertise on the network.
Yahoo is rumored to be planning a return to search – both organic and paid. CEO Marissa Mayer has reportedly spearheaded two projects, code-named Fast Break and Curveball, aimed at getting the company out of its search deal with Microsoft.