Below are a few ways you can begin optimizing your website for Bing. Domain Age---Bing puts more emphasis on domain age than Google. If you have an older domain, you’re already on your way! That was easy, right? Titles---Bing puts more emphasis on title tags than Google, so make sure your title includes your keyword. Once again, a solution that takes no more than 30 seconds. Flash---Google has never liked Flash much, but Bing doesn’t mind. If your website has a lot of Flash, you will likely have much better luck with Bing. Links---Both Bing and Google put an emphasis on inbound links and backlinks, so getting the basics down is essential for both search engines.
Bing has 8.3% of all search, so it is worth spending some time to Bing SEO. Another interesting fact: Local searches on Bing and Google will often have much different results, with Google’s often swaying in favor of larger, more established companies and Bing being more likely to show small businesses. Why? Because when you search for local businesses on Bing, it assumes that you want the most proximal, which isn’t always the big box store in town. Google, however, gives you the most credible, which often is the larger business.
Bing also has a desire for grammar and spelling to be very accurate. That's one thing I've noticed in Bing.