magnet:?xt=urn:btih:9941b4485203c7838c3e688189dc069b7af59f2e&dn=RS%5Ffull%5Fcorpus.bz2&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80&ws=http://reddit-data.s3.amazonaws.com/RS_full_corpus.bz2 adds the S3 link as a web seed.
That's pretty cool. So would it pull the data from the web or the seedbox? Sorry - I'm fairly newbish with p2p technology.
Both, if the client is new enough. I'm not sure what weight is given to each. You have no contact details and the site on your keybase profile is dead - can you get in touch? I'd like to experiment with this.
Shooting you an email to the email listed on your profile. I really should fix my keybase.