chiark runs a usenet news server which offers complimentary access to users at Cambridge University. Our peering information is available. Matthew Vernon is my co-administrator.
I'm one of the moderators of uk.rec.cycling.moderated, a USENET group (the creation of which I shepherded through the uk.* process).
Between us Matthew Vernon, David Damerell and I run the moderation robots for uk.legal.moderated, uk.radio.amateur.moderated and uk.rec.cycling.moderated, on chiark.
My PhD thesis from 1997 is available for downloading.
The old Cambridge quotes file and GROGGS (the General-Purpose Reverse Ordered Gossip Gathering System) which I once had quite a bit of involvement in.