Earlier quoted context omitted.
Maybe Bing is still doing this: http://searchengineland.com/google-bing-is-cheating-copying-... In that case, the hacker news interest would probably get the page included in Bing, but it would take some time before everyone would start seeing it.
Did you try the search on both Bing and Google? Looked very different for Bing and Google. Also, that accusation was purely a PR play by Google that IMO Bing refuted convincingly: http://searchengineland.com/bing-why-googles-wrong-in-its-ac...
Bing said they were using internet explorer to monitor users's activity and copy search results. They're still copying Google search results, just doing it through IE.