Lack of copyright
Everything on this blog I fully release into the public domain. This means you don't need to ask my permission to re-publish, change, borrow, modify etc, etc. You don't even need to attribute it to me or link it back to me (though I would appreciate it).
New knowledge is built on top of old knowledge. Why stop this? By fully sharing the products of my mind hopefully others can go on and build better things. My inspiration (and a better written, more lucid explanation) for this decision can be found here Zen habits - Uncopyright.