Bing’s Webmaster Center Program manager, Brett Yount made an extremely unexpected comment in the Bing Forums when he recommended Digg & Yahoo buzz  to boost your website’s indexing & rankings on bing.com -

If your site pages have good content, submit them to buzz and digg. Both have a high chance of getting your page indexed.

Now, ideally this does make sense because both Yahoo Buzz and Digg are popular source of latest content for search engines but why would ANY search engine share this kind of information explicitly with the SEO community and webmasters?

Whatever the reason is, I am pretty sure we will see a spike of traffic going up for both Digg & Yahoo in coming weeks!