I use Pingdom to get notified when my websites are down. I actually have 5 different hosting plans (one dedicated server + 4 shared) with different hosting companies and different IP addresses. It’s really nice to get statistics on the uptime for each hosting company. I’m mostly happy with with my hosting but some have an uptime of 99.4% which might sound like a lot but it’s actually quite bad compared to the other hosting plans. I’ll write another article to talk more about hosting because it is so important for your website and your business.