Is It Down Right Now?
The name says it all: "Is It Down Right Now" monitors the status of popular websites and reports whether they're down and for how long. Users can check a site's status by entering any URL, using a bookmarklet, or choosing from a long list of big name sites, social networks, and even online games. So check IIDRN.com
before you ask a friend or coworker, "is it down right now?".