I kid you not, I have only vaguely heard of Orbitz before now. Suspect it is US-centric? A generic term for this kind of thing might be "price comparison".
I guess it is US centric. I was going to try and make a marmalade joke/comparison/analogy but could not come up with anything that was funny:)
I guess if you have never heard of orbitz you most likely are not in the market for american car insurance.
On a side note everyone talks about how global the internet is but I wonder how many "internet based services" outside of media portals are actually global...