Let’s Do Something now has the full Facebook connect experience. This was the most requested with Mobile (done), and Mindmaps (in progress).
Mark gives his take on the primal blueprint, I agree with 90% of the things that he says, and a remaining 5% he's changed his views on.
A book that gives various "body hacks" to accomplish common goals. Some of the information may be dubious, but overall a fantastic starter for any body related goal which you may have.