There are a lot of free website monitoring services, e.g.,pingdom.com, but what good are they? They seem do just do a ping on the server, which I don't think works for a URL to a website on a shared server( my website is on a shared server and when I ping it the reply is that it cannot be detected, yet I can browse to the website). On the other hand, ping works for the server, but don't hosting companies monitor their servers?
So what good is a free service that just pings? Maybe it is just a way to get you to buy their premium services?