User blog comment:Mobo85/Phineas and Ferb Goes Fourth/@comment-4554752-20111110014014/@comment-3212462-20111110043505

Well, Disney has some sort of policy not to let their cartoons run past a certain amount of episodes... 70, I believe. Anyway, Phineas and Ferb has already past that milestone, and it's still gaining popularity, so I think it's safe.