Apparently not too important to the folks at Bebo According to Royal Pingdom (great name by the way) which measures downtime using Pingdom’s uptime monitoring service.

Bebo’s downtime has increased significantly lately and has had by far the most downtime of the 14 social networks monitored for the survey. More than 12 hours of downtime in less than two months is a lot, and it could possibly be caused by the new open application platform that Bebo launched in December, allowing third-party developers access to its platform, Facebook style. It could be putting more strain on Bebo’s systems than they anticipated.

The two giants in the field, MySpace (with 25 minutes of downtime) and Facebook (with one hour and 35 minutes of downtime), can both be considered to be within acceptable limits, especially MySpace.

Social networks, just like any other websites, will occasionally suffer from downtime, either planned or unplanned. However, social networks have a different type of usage than most websites, with frequent visits from the same user and many page views per visit. Therefore downtime can often be even more noticeable and frustrating to social network users.

Below are the results of the survey.

* According to Royal Pingdom: If a web page is not reachable, returns an error, or takes longer than 30 seconds to load, it is considered as down. Downtime is always confirmed from two geographically separate locations.