User blog comment:Adrián Perry GZ/I'm afraid Gravity Falls will impact with Phineas and Ferb/@comment-67.204.232.84-20120623154033

I doubt Gravity Falls will make Phineas and Ferb "go down, down, down". Phineas and Ferb has been around for about 5 years. There's so many merchandise (I've seen plastic dolls, plush characters and at our house, we have the four characters (Phineas, Ferb, Agent P (he's in that form) and Doof) where their bodies are plush, but their heads are plastic and they make noises)) and they're making a movie (2013), there's P&F:ATSD and 3 seasons already.