Simply Testable is a free web-based tool that will save you pleanty of time and will take the pain out of routine front-end web testing. It will validate your HTML and give you a detailed overview report of your entire site's successes and failures.
Site is down….
I don’t think the site is down, or at least not now as it’s working fine from what I can see.
There certainly are capacity issues from time to time that we’re still in the process of resolving in a non-hacky way!
superb test tool ever………