I've a question about the code used with the .Net Gadgeteer extender module to use pulse-width modulation to control a servo motor. That's a software question but it is also an electrical engineering question (I think), witness the large number of Arduino questions here (though the number is even bigger on SO).
SO has a tag for .Net Gadgeteer questions (with a grand total of 13 questions!) while we don't here, but that may not be significant.
I guess that the general version of my question is "are questions about programming hobbyist electronics platforms best asked here or on Stack Overflow?" but I am specifically interested in .Net Gadgeteer questions.