Piazza has been a pretty good tool IMO. I haven't used it in the context of the OMSCS, only in all my undergrad classes at Berkeley, but it's been a really help

Piazza has been a pretty good tool IMO. I haven't used it in the context of the OMSCS, only in all my undergrad classes at Berkeley, but it's been a really helpful tool when there's good moderation from the Professors and TAs. Maybe this condition does not hold true for the OMSCS, but I think almost all your problems can be solved by a good moderation team.