Like many people, I rely on plugins such as Superfish, Nivo Slider, Google Charts, etc. for Web design.
Which Stackexchange site is the best to ask customization questions on these plugins? I am not talking about writing code (in which case Stackoverflow would be my choice), I am just talking about questions on the out of the box configuration options, or alternatives to a given plugin.
I have found older, similar questions, but people seem to have divergent opinions. I'd like to know the "official line" (I tagged this question "support", not "discussion").