Which video sites are currently supported by Fanpop for embedding?

Fanpop has to implement a widget from each video site (such as dailymotion) provided by that site in order to support video embedding. Video embedding is what allows you to watch a video on Fanpop - none of the videos is stored on Fanpop's servers; instead the embedded link is like a window to the other site so that you can watch it on Fanpop without going to the other site.

My question is: what is the complete and current list of sites for which Fanpop has implemented/enabled embedding?