A friend at work introduced me to a site that I found quite handy. It is http://downforeveryoneorjustme.com/
Down for everyone or just me? tests a URL to see if the corresponding site is available from their server. If the site does not respond, then the site declares “It’s not just you!”.
Truth is, I don’t know what is being tested. Perhaps a response code? That would make sense. I also don’t know where its being tested – and that is more important. It may attempt to resolve the URL from multiple servers, that would be the most helpful.
However, it is still pretty neat. Another tool for the kit, another site saved to favorites.