Ok, I've had a few bites, so I've put it here: http://bennettpr.f2o.org/files/searchEngines.pdf Caveats: - We had a budget of $10k - Had to work on a Solaris / Apache platform - Had to index PDF's - Had to be fast (duh) The doc would likely make more sense if I could include the preamble and summary of findings, but for commercial reasons I can't. (Read: I like my job and don't want to lose it) Any questions let me know offlist Paul