We use site canary for www.trailbehind.com. It ran smoothly for months, and then we had a bit of a problem, but site canary alerted us right away. Also, site

We use site canary for www.trailbehind.com. It ran smoothly for months, and then we had a bit of a problem, but site canary alerted us right away. Also, site canary was recently made free, so set it up! It will email you when you have an issue. Should definitely have some sort of uptime tool like pingdom or site canary. Disclaimer: I have nothing to do with site canary, other than I use their software.