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Bowes used a script that interrogated the Facebook public profile directory. All of this is publicly available data. Search engines like Google have access to this information already. You can tell whether your data is publicly available on FaceBook by seeing whether "search for me on FaceBook" is set to everyone in your settings. You can also see whether "enable public search" is checked in your settings.
I am going to download this large torrent and see what this data is all about. Probably will just get usernames and URLs. Then perhaps I can write a small program that scrapes the profiles and builds up my own database. Not sure if I have enough bandwidth, disk space, and processing power to do that. We shall see.