I've found plenty of helpful information on StackOverflow via Google as well, but I definitely would not say that it "really really works."

I've asked two questions (C#/.NET so there's a large pool of potential answerers) and neither question ever got the answer it deserved, even though both got answers from genuine experts (Jon Skeet and Eric Lippert). I found the answer to my first question on some MSDN blog after I asked on StackOverflow, the second question is still unresolved.