We use a monitoring service called Wormly... http://www.wormly.com/ http://www.wormly.com/ It's run by a friend of ours who used to work at Sitepoint and was f

We use a monitoring service called Wormly... http://www.wormly.com/ http://www.wormly.com/ It's run by a friend of ours who used to work at Sitepoint and was frustrated by the limited options for good, affordable, distributed monitoring. He's been running it for over 2 years and is growing fast. It's a great service and recommended as a YC-style startup worth supporting.