Microsoft's Bing search engine has overtaken Yahoo to become the 2nd most popular internet search engine in the US after Google.

According to a report released by Nielson, Microsoft search offerings, which include Bing, MSN and Windows Live, now hold 13.9 per cent of the search market share, more than the 13.1 per cent held by Yahoo.

Since signing a deal with Microsoft to power Yahoo's search engine, it was only a matter of time before Bing surpassed Yahoo. The search deal was a part of Yahoo's plans to focus on more important things like content and advertisement.

The Nielson report takes into consideration only those searches which have been conducted by typing directly into the search box, and not those triggered by user activity on the web.

Check your Bing results. Bing is more actual content driven than Google. Bing also is a great deal more dependent on Title tags, etc...If you need help!