I'm back from the family vacation (the beach at Stinson was perfect aside from the 12ft Great White) and am now entering the last two months of crunch book writing. We'll be launching a blog redesign tomorrow, and the focus will shift to mostly FREE material (although the name of the blog will remain the same--there's too much Googlejuice there to give it up).
To replace the sidebar in current blog, I'll be microblogging random interesting examples of free as I come across them. Here's today's, from Marginal Revolution:
A Danish chain of gyms is now offering membership free of charge, with the only caveat that you have to show up, in order for the membership to be free. If you fail to show up once per week you will be billed the normal monthly membership fee for that month. This should solve the problem with incentives that gym-membership normally carries - there is suddenly a very large (membership is around 85$ per month) incentive to show up each week.