Bing SEO guide is the official Microsoft guide for SEO with BING, as found on Bing Webmaster center:

The following are official recommendations that might help Bing’s MSNBot (The Bing web crawler, a program that scans websites and indexes their content, such as text, documents, images, and links, for searching.) and other web crawlers (A program that scans websites and indexes their content, such as text, documents, images, and links, for searching. The web crawler used by Bing is also known as MSNBot.) effectively index and rank your website. Bing has also provided a list of techniques to avoid if you want to make sure your website is indexed. [Read the rest of this entry...]