I love, LOVE Quora! What is it you ask?
Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.
It's somewhere between Wikipedia and Yahoo Answers...both also great places to get help.
The thing that I like about Quora is that each answer is tied back to a specific person. So if you have a follow up, you can ask the person via their mail.
For instance, a guy with diplomatic background answered a question that I posted. I needed more specifics, so I clicked on his blog link and viola! He had posted something about the topic I was researching.
There are a lot of writers on Quora, so it’s a great place to find similar genre experts. I also like that the answers are continually evolving and getting better.
Most writers have a day job and they're usually experts at it. Ask a cop procedural question and a cop will usually answer...a cop that writes is even better because they'll understand the context.