lucy24 - 9:25 pm on Apr 29, 2013 (gmt 0)
Bing seems to be the engine that shows a lot of html files.
This may be a general bing characteristic. I similarly see them picking up a lot of without-to-with www redirects even though I have never allowed both forms. Someone in an unrelated thread recently described bing as "whitelisting" in search, while That Other Search Engine "blacklists". Wonder if one of the things they look for is a site that's diligent about redirecting to a single form of each page name?