Bing has just announced that they are going to change the name of the bing web crawler (a.k.a user agent) to Bingbot. In the past Bing’s user agent was known as MSNBot.
Microsoft’s Bing Crawl & index team has been testing a beta bot for quite some time along side their regular MSNBot, and now they have decided to remove the beta name from the Bing crawler and change the name of the crawler to reflect Microsoft’s new brand for search – Bing. They also highlighted that instead of the old msnbot 2.0b showing up in your server logs, the updated user agent will be:
Mozilla/5.0 (compatible; bingbot/2.0 +http://www.bing.com/bingbot.htm)
The HTTP header From field will also change as shown below:
From: msnbot(at)microsoft.com will become From: bingbot(at)microsoft.com
Even though they are making this change, bingbot will still honor robots.txt directives written for msnbot, so webmasters are not required to make any changes in the robots.txt file.
If you feel that your site is not being indexed properly, or your search traffic from Bing has decreased dramatically you can contact the bing crawl & index team at: email@example.com.