Social Networks With the Most Downtime

Some Social Networks have serious downtime periods during which users are not able to access the website. The Social network with the most downtime during the past month was BlackPlanet.com. Here is the list of social networks with their downtime hours:

BlackPlanet : 20.2 hours
Reunion : 12.2 hours
Ning : 7.2 hours
Twitter : 5.8 hours
Hi5 : 2.9 hours
Flixster : 0.7 hours
LinkedIn : 0.7 hours
Orkut : 0.7 hours

Most of the other popular social networks had zero downtime during the same period.