I don't know how long this site will last. I am thinking that some jar head in the government somewhere will be on it soon, claiming that it is a threat to security. For now though, we do have the presence of a site that lets you know via the reports of others what TSA check points are active or inactive.
Image via Wikipedia
Be sure and at least check out TSA Status... I am afraid Big Brother may not let it last too long.
While your at it you might enjoy this Venn Diagrahm