The National Library of Australia has been spidering sites that have consented to have their content archived in a local version of the Wayback Machine. The requirement for Australia-relevant content is important.
They have been adding to their archive for quite some time now... do you have a begin date on that? The first request to a site they wanted to include that I know of was at least a year ago... but as far as I know they do notify you if they wish to include you.
From reading some of the guidelines [pandora.nla.gov.au] it appears that inclusion is by invitaion only and after licence has been granted to the library to spider your site. A far more ethical process in my opinion.
Same here, Keeper, with Opera 7 presenting itself as Opera. Opera with the magic word MSIE in the ua-string shows a nice list of documents, manuals and other files. Obviously they've hired some clueless designer to build the site. Interesting doctype, too:
<!DOCTYPE HTML PUBLIC "-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//EN" "hmpro6.dtd">
I don't think I can quote email from a mailing list here but it seems that the Wayback Machine founder Brewster Kahle did offer the code to the NLA but they did not take it.
Apparently only a few sites (~700) have been spidered in the past year. I noticed their spider (a machine that runs HTTrack) visit my site a few times. It has an entry in the state-run directory, which was being spidered, and HTTrack was probably set to spider one external level.
I have since filled out the spidering request form which is linked from Pandora's main page as "Notification Form". Not for my business site (which is unlikely to be spidered, although they have chosen some iconic Aussie businesses as samples), but some noncommercial resources such as a magazine that I help to edit.