"If you can get along with everyone and everyone loves you, then you don't stand for much. A person who stands his ground for his principles and won't compromise his integrity is not loved by everyone."
- Larry Winget
I personally use Service Uptime to keep track of my web sites’ availability. There are lots of web site services you can keep track of but there are the 5 that I consider the most important:
http – Status of Apache web server
mysql – Status of MySQL database