Quora copycat investor says foreign web sites are "harmful", on Quora
quora.com
quora.com
Of course sites that work within the PRC system of government censorship tend to stay unblocked. ;)
(a) He is a "nice" guy (b) As sign of their appreciation, they might block quora at least sporadically.
I don't know, but I would think that top chinese VC have a personal relationship (dinner invitations, red envelopes etc) with whoever is in charge of the great firewall.