With youtube really cracking down on copy write now a days its a fairly good source, apparently hasbro has not said anything about their shows being on youtube, and if they did they would of removed the videos asap.
I guess Lauren Faust understands how the internet works, unlike so many other creators out there. Most people go the route of shutting EVERYTHING down and slapping copyright suits here and there over it, and all it does is shoot themselves in the foot because then people will go "oh I cant watch this online.. was a good show.. too bad the creators are a douche". Lauren understood that her shows phenomenal success was due to the fact of how viral it became on the internet, heck she even has her own DA page if I recall where she gets tons and tons of feedback on the show, she knows if she or Hasbro said anything it would just murder their ratings and wreck havoc with the massive fan base.