Leo Babauta, Zen Habits (http://zenhabits.net)

There are a lot of folks out there who do the whole mindfulness gig. They're the ones that usually tell you the amazing benefits of mindfulness and focus and then have you exit through the gift shop of books, guided meditation, and courses.

Leo Babauta has all that stuff available but he doesn't make that his primary focus. He is genuine in his desire to help people.

His blog is public domain and folks have re-worked it into unique ways.