Social Networks availability - uptime and down time
This real-time status report measures the uptime of the most popular social networks and is provided by WatchMouse. This site can be used to see if a particular social network is down or if it is loading slowly. This site also provides social network up- or down-time and performance history. Every five minutes each social network is checked from one of the 49 WatchMouse global monitoring stations. See this WatchMouse press release for more about the methodology and benchmark.
Source: social.downornot.com