Comment by Jwarder

Oddly Bing seems to like PDFs more than other pages. I have a project that generates PDFs for logged in users. I see a handful of Bing/MSN IP addresses that keep on trying to view that page everyday, but MS has never tried to index other pages that need user authentication. So either Microsoft is really eager to index PDFs or my code the logs unauthenticated access attempts doesn't work on other pages.