Remember earlier this year Bing wanted to slow crawling the web and request webmasters to push them
content via their URL submission tool. They expanded their rate limits and opened their API for it.

Now, Bing posted an easy to understand how to blog post on this topic. It really is something simple for a web developer to set up for you and probably recommended you do it.

Bing said “In the last few months we have seen rapid adoption of this capability with thousands of websites submitting millions of URLs and getting them indexed on Bing instantly.”

Forum discussion at Twitter.