This is a great new feature to use.
However, I think it would be great if the administrator could use this to create a default dashboard for their site and then allow users to alter theirs, only if appropriate. I guess the video above could then be made available for users to follow.
RSS news feeds from Facebook, youtube drag and drops into groups = self-posting groups for example Good work keep it up. Even live streams can be posted into groups with an RSS feed ;))
It would be very useful if we could add an HTML or PHP box widget as well.
I installed on fresh copy and it didn't cause white screen. Maybe you have some cache issue.