This is a collection of Geocities data downloaded by a bunch of people who call themselves ARCHIVE TEAM, who began scraping the Yahoo! Geocities site during a six month period in 2009, before Yahoo! shut down geocities.com on October 26th, 2009. This collection is compressed in a UNIX filesystem with both 7zip archives and tape archives (gtar).
Obviously this won’t be a complete archive of all available GeoCities sites but the fact that there were those that took the time to archive the data for posterity and made available via BitTorrent goes to show that peer-to-peer services such as this aren’t just about sharing movies and music.
At 641GB I’m not surprised there’s still only one seeder at the moment.