Website Uptime refers to the amount of time when server keep up running, which means website is accessible. It is generally listed as a percentage, like “99.9% uptime.” by most of the hosting providers. It is a great measure to find out how good a Web hosting service provider is at keeping their servers up and running. This tutorial lists some popular webservices you can use for monitoring your website’s uptime.
UpTimeRobot.Com is free service that allows you to monitor your website’s uptime. Now by using its free WordPress plugin you can get log messages for your website’s uptime directly in your admin area dashboard.