Less Wrong is a community blog devoted to "the art" of rationality. It revolves around discussion of short essays. Less Wrong is a project of Oxford's Future of Humanity Institute and a companion site to Overcoming Bias (previously; how to read). [more inside]
How to ruin a joke. A concise and surprisingly astute explanation of how referential humor works on the web and why it kinda sucks. (Warning: somethingawful.com)
The Sandbox A Doonesbury driven non-partisan non-policy community blog on the details of being human in a global war on terror.
Nerdfilter "The community blog for weirdos like you."--just opened and trying to emulate Metafilter, without the politics...take a peek.