@niplav heh, funny how that works out sometimes :D
Well off the top of my head I'd probably be promoting:
#1 Diaspora for the best depiction of virtual persons I've ever seen.
#2 Schild's Ladder for the adventure of unleashing a universal X-risk and the race to halt it.
#3 Permutation City; all about Cellular Automata so good but also weird cults too?
#4-N pretty much all the collections of short stories which have some vcool concepts
Orthogonal is bit weird, no Relativity in the setting :!?
In which niplav undertakes the easy step of formalising a concept:
I operate by Crocker's rules[1].