Product Finder Guide

Hey guys, I could swear a few months ago, I saw a guide to finding online products using Google (maybe called Google hacks), to locate PDFs and to find clickbank stuff. Not sure if it was a post, sticky or PDf, but it was great. Anyway, I lost my local version a while back (the great XP crash of 2008) and can't find a new version of it for the life of me.

Does anyone know where this fabled resource is - I am missing the obvious or did I imagine it - if so - anyone recommend a similar product?