At some point everyone comes up against a question they would like to ask for help on. Currently there exists a SAS mailing list which is moderated and archived. SAS practitioners are encouraged to subscribe to this list.
ATSAS at EMBL hosts some forums particularly relevant to biological small angle scattering. We hope to provide a more general SAS forum here in the near future.
There is also a SA(X)S-related blog site run by Brian Pauw called Looking at Nothing which is worth a visit.