I'm going to hop out on a limb and play devil's advocate here . . .
I think there might be something a little bigger going on than Google is giving Bing credit for . . .
I don't for a moment doubt that MS is more than likely collecting information from IE and Bing-bar users as to search queries . . . but I do not think they're fully "copying" google's results.
Now, if I remember correctly, ages ago, google's search engine functioned very much like the antique WebCrawler - that was, it "scanned" pages and determined it's search results via keywords and caches. It used a slightly different method to apply the same results . . .
But, this article kinda spurned a curiosity for me - Bing has been quite adamant about it being a different search engine that returns more relevant results, right? So, that got me thinking, perhaps bing isn't going to the effort of scanning and caching web pages, but instead scanning user search queries and using those to return the most commonly selected results.
Typing a simple string into bing and into google does indeed return similar results, but the way in which they're ordered is quite different. It's understood that most relevant result will return at the top of the list . . . but, bing does return some different results intermixed - the page does not look identicle to google. Now, if you bring up a different popular search engine (i.e. Yahoo, lycos, etc.), and search the same string, you get a different set of results . . .but, the differences that bing had returned which google hadn't, you'll more than likely see on these other search engines.
Now - if this is how MS has engineered bing to work, I can't fault them for it. It does make their search engine different in that, it's returning queries based on a popular user selection across numerous engines - eliminating a lot of BS sites that might crop up on other engines. You're left with a larger selection of the most relevant sites other users have visited . . . think of it like a search engine for the people by the people. It would also drastically reduce the amount of crud MS would have to store (like how google caches sites), and search results would change quickly with the changing trend in popular queries.
Such being the case, I don't see bing as actually "cheating" - it's just going about things a different way. If My "theory" is indeed the truth, that would explain the anomalies in googles "research," and it would also mean that google literally created what they wanted bing to return as a result.