Which raises the question: does archive.org offer their Wayback Machine index for download anywhere? Technically, why should anyone go through the trouble of crawling the web if archive.org has been doing it for years, and likely has one of the best indexes around? I've seen some 3rd-party downloaders for specific sites, but I'd like the full thing. Yes, I realize it's probably petabytes of data, but maybe it could be trimmed down to just the most recent crawls.

If there was a way of having that index locally, it would make a very powerful search engine with a tool like yours.