Personally, I had decent experiences in most cases. I never got over the fact that it refuses to become the de-facto point of reference for stacks, i.e. questions like "what are the best web libraries for $language", "what is the best practice for deploying $framework" are brutally rejected. And it's a shame, because those would have helped immensely -- it's very easy to learn a language, but it's really hard to figure out what you should use from the surrounding ecosystem.