NearlyANerd.com

Ding! Its Up

DingItsUp.com sends out a email, tweet or text everytime a site of one’s choosing goes down and back up again.  The site explains further:

Ding It’s Up is a free service that alerts you via text (SMS), twitter or email when a website goes down or when it comes back up. We will never send you a text/email unless it is to inform you about a website you requested information for – you can unsubscribe at any time. If you would like to talk to us just email us at mail@dingitsup.com – Thanks!