For instance, Googlewhack has always been a fun past time (find a search term of two words or less, that resolves to one and only one result) - and its fairly tricky to do (check out the site for details) - on Google.
But with Bing.... not so hard! Turns out that searching for a competitve search engine (Google, Yahoo, AOL, etc). is a googlewhack, um, bingwhack.
I'm (pretty) sure that the algorithm is NOT based on that fact - but that it appears so is, well, so Microsoft smelling... try it yourself.
Cue John Hodgman Apple commercial....