Just sharing my experience: I have two apps. My more popular app has been waiting for review since July 24, and I've been looking at the forums because it's frustrating waiting so long. I submitted an update for my other (less popular) app yesterday and it was reviewed in under 24 hours. I didn't notice any differences in review time after answering the social media questions, so I don't think that's related. It's all a black box to me, though.
I've contacted support, but it hasn't been long since I contacted them and I haven't heard back yet. I've been tempted to request an expedited review, since that's always worked well in the past, but expedited reviews are supposed to be for critical fixes or extenuating circumstances.
Topic:
App Store Distribution & Marketing
SubTopic:
App Review