Here is a nice animation that explains the reasons we all love Google search results: jump to How Google works.
By the way, I would like to test the new "yellow-coloured" Google Search Appliance (GSA) that can index up to 220 file types, Domino databases too: take a look at this demo video.
But it seems a little bit expensive for small companies ;-)
Anyway, have you had the chance to test that appliance (GSA)?
Do you have any feeback searching both Notes, MS Office and PDF documents with the GSA?
I guess there's also an effective IBM product doing the same job of GSA... Am I right?