According to a poll paid for by Sisters in Crime, the answer is no.
Though Word of Mouth was near the top of what does sell books, along with being on the best seller list, and paid advertising, I couldn't help but think that Social Media is a form of word of mouth.
Certainly Facebook and Twitter are seen by a lot of people. I know for a fact that social media helped Joe Konrath become a best seller in e-books. Ooops, maybe Sisters in Crime isn't all that interested in e-books even though Konrath is making more money on Kindle then he ever did with his paperbooks.
Speaking for myself, I've been intrigued by books I've read about on blogs, including my own. When I interview someone and their book sounds interesting, I've bought the book.
Whether the poll is right or not, I'm going to keep on writing my blogs, posting on Facebook and Twitter and interacting with people who read my books.
So what do you think?