I personally don't mind if one is copying the search of another. The whole idea is to get the BEST search results possible. And thats what I use a search engine for is getting by far the best results possible. I don't mind how they do it and as far as I can tell they aren't breaking any copyright laws...
In any case, if Bing is indeed copying Google's results, it is utterly unethical even if users are receiving accurate search results. As mentioned in the article, what Bing is doing is analogous to copying Google's "exam," which by any reasonable standard is wrong, even if a "proctor" didn't specifically state this rule.
Perhaps Google has patented a few of its search algorithm components.
