I am afraid that some of you may experienced difficulty to access this site in a particular 5 hours. The server hosting this site might have gone down during the time frame, as you can see from the server uptime diagram below:
Image source: Master.com watchdog.
It is a very handy service to watch the availability of your webiste – its performance and up time. As a webmaster, may be interested to get an account from master.com. The best thing is, you don’t have to add link or put logo to your site to use this service.