Usually my jobs are pretty separate, but it was cool to get a tip of the hat from Tara over at ResearchBuzz talking about AskMetaFilter as being a really useful QnA site.
I find of all the Ask-the sites out there I tend to prefer the Librarian/Reference type sites (it’s scary how many states now have Ask-A-Librarian services) and Ask Metafilter. AskMeFi because it tends to have interesting questions and thoughtful answers. (And occasionally, granted, whacked-out questions and lunatic answers.) Many of these sites also have archives of asked questions, making them fun to mine even when current questions aren’t interesting.