MICROSOFT'S renamed search engine has obviously inherited all the same deficiencies of its old identity (Live/MSN), including the spam Webmasters were complaining about. Based on this post from SEO Roundtable, Microsoft carries on filling Web site logs with "junk" requests that give the illusion of search gains. Here is Microsoft's excuse:
Historically, Bing (Microsoft/Live Search/MSN Search) is known for using referral requests to attempt to find cloaked pages or find search spam. Since April 2007, Microsoft has been sending weird referrals to many webmasters. They were known as internal cloaking tests designed by Microsoft's search quality team. But even though they promised to cool it with those visible tests, it came back time and time again.
A report this week claims that nearly 90 percent of Microsoft-sponsored search results for online pharmacies found by the Bing search engine lead to fraudulent sites.