These web hosting uptime rankings are based on reviews shared by people on social media. Uptime scores are generally very low because people tend to share their frustration when there is an outage but say little when their sites are online. The percentages you see below are not actual uptime. Rather, they reflect positive statements about uptime (including the handling of downtime). These rankings should give you an idea of how web hosting providers compare with regard to uptime.
Update 2016, July:
Since web hosting is only one part of the website building process, I’ve added two helpful links below.
#1 How to Start a Blog: 7 Simple Steps: step-by-step guide for creating a blog with WordPress
#2 Website Setup: Robert teaches how to build websites.