Ok, it's not going to be much of a surprise what this research tool is. This article is more about convincing you that it's a great idea:
Tap into the power of your friendships, using social networks like Facebook and Twitter. You will be amazed at the breadth of knowledge your online contacts have at hand, and how quickly they can deliver that information to you.
Caveat: this doesn't really work if your social media 'reach' is low, but on the other hand:
It turns out that people enjoy helping writers get it right.
Just remember to maybe give your friendly researchers a shout out once you publish something!