I'll never be famous, but have had some noted acquaintances – if that term is not too strong for a few of these.
- Dan Alderson
- Andrew Appel, schoolmate
- Kenneth Appel
- John C. Baez
- Donald Bitzer
- Dorothea Blostein, schoolmate
- David Bratman
- Damien Broderick
- Victoria Brynner, schoolmate
- Kevin Carson
- Ruth Chabay
- Gregory Cochran
- Lee Daniel Crocker
- Hugh Daniel
- Tony DeBlase
- John DeChancie
- Greg Egan
- Fred Foldvary
- Richard Foss
- David D. Friedman
- Mike Glyer
- Lee Gold
- Mike Gunderloy
- Robin Hanson
- George W. Hart
- Sean Haugh and Sean Hastings are Twitter mutuals of mine who, to my childish amusement, appear not to know each other.
- Keith Henson
- John Hertz (fan)
- Eric Hughes (cypherpunk)
- Norman Johnson (mathematician) – the cover of his last book uses a design of mine.
- Brendan Kehoe
- Samuel Edward Konkin III
- Jenny Lawson follows me on Twitter; I have forgotten why.
- Mike Linksvayer
- Prince Edouard-Xavier de Lobkowicz, briefly a schoolmate
- Keith Lofstrom
- Michael Longcor
- Ken MacLeod – I guess we first "met" on Usenet.
- Rex F. May
- Timothy C. May
- Ralph Merkle
- Mark S. Miller
- Vince Miller was my flatmate for two years, and taught me to shoot.
- Max More
- Kevin O'Donnell Jr.
- Sameer Parekh
- Fred Patten
- Diana L. Paxson officiated my wedding in 1985, signing the certificate as a "Priestess of Eris".
- Bruce Pelz
- Charles Platt (author)
- William Thomas Quick, friend of a friend
- Eric Rasmusen, schoolmate
- Eric S. Raymond
- Jeff Riggenbach
- Bill Roper (filker)
- Anders Sandberg
- Jack Sarfatti follows me on Twitter. I have no idea why.
- Lawrence M. Schoen
- Henry Segerman
- Bruce Sherwood
- George H. Smith
- L. Neil Smith
- Linda and Jon Sohus, presumed murdered by Christian Gerhartsreiter
- Jason Sorens
- Vin Suprynowicz
- Jack Vance once said to me, "You are a man of great dimensions!" I had to laugh; I do take up a lot of space.
- Natasha Vita-More
- Bill Warren (film historian and critic)
- David Weinberger
- Richard Winger
- Gregory Yob, when he went by "Hara Ra"
- Cathy Young
- Zeno Rogue, creator of HyperRogue
- the founders of The Other Change of Hobbit