What is it?
Quora defines itself: Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.
Why should I use it?
Heather Huhman at U.S. News states: With so many professionals and thought leaders participating on the social Q&A site, it can certainly be another tool to develop your online presence and share your expertise in your industry.
So, how does one utilize Quora? Mashable provides a video overview in less than three minutes.