I proposed a Q&A site for Sage and all its subcomponents viz. GAP, Pari, Singular, Sympy, ... on Area51 here. I thought many mathematicians here who use Sage in their research and teaching here might be interested in such a site especially because questions related to software aspects are off-topic here.
Here is the Area 51 proposal: http://area51.stackexchange.com/proposals/70511/sage
Please go and follow it if you're interested; add example questions and vote up (down) questions that you think should be on-topic (resp. off-topic) for the upcoming site.
/p/s/ I posted to meta.math also on the grounds that asking for explicit software help (non-mathematical questions pertaining to Sage or its subcomponents) is considered off-topic.