I'm trying to figure out how to configure R's proxy settings so I can download and install some packages. I know that stuff specific to R has been in the gray area for on-topic-ness in the past (and maybe it still is), so I want to know if this kind of question is on-topic enough for Cross Validated, or if I should instead take my chances asking it on Super User. Thanks!
Disclaimer: I'm one of those people who thinks that all R-focused questions should go to StackOverflow. That is not the policy we decided on.
I think this would be most appropriate at StackOverflow. It's not purely a programming question, but I can't imagine a question about CPAN (for example) getting turned away there. There's tons of overlap between the StackOverflow R community and CV's, but I think the former is much more focused on R as software.
Better to ask it here than at SuperUser, though. SO > CV > SU.