go for google optimization, then concentrate on yahoo. after that go towards bing. we know yahoo and MS are in agreement in search market.
The only thing you should do is submit your site and your site's sitemap to Bing's Webmaster tool and then go on doing your usual stuff that you do for other search engine optimization like the metas and the backlinking
Maybe everyone should just do a reverse Rupert Murdoch and contact Bing, asking them to delist their website.
Just stick to the basic SEO and your site will be good in SE. On Page - Don't over do it or it'll look like SPAMMING. Off Page - Don't use same anchor text all time.Make some variation that related to your keyword. Hint:LSI
All my domains with the exact Keyword domain are ranked well on Bing ..So KW in domain names is a big factor
Submit your site and sitemap to Bing but just focus on optimizing for Google. If you do well on Google chances are you will do even better on Bing.
lol what?! Why would Bing give more credit to an underline tag... Just use everything you use for Google for Bing, they are a simpler version of Google and really only check title tag, domain name, header tags, and meta tags for SEO. However I barely even get traffic from Yahoo!, nevermind Bind... it's really a waste of time right now to care about Bing's SERPS.
I have noted that with just SEO best practices we are ranking in BING automatically. However I would also note that BING traffic sucks. So who cares . . .
optimising for Bing can be very benefitial depending on who your marketing at. Bing users tend to be older people who use the default Bing tool bar in IE. Saying "optimise for google only" may not be appropriate for some.