Share 'Book sales in 21st century...what are you doing?'

I decided to write my first blog post on the book blogs forum geared towards enticing other members to connect. So I pose this question to you: given so much noise in most industries, how do you market & sell your books? What kind of a plan do you put in place? Are you planning a bestseller campaign, and if so, what are your top 3 marketing efforts?