It's the equivalent of that kid back in school who would tell you about the "super duper secret cheat that my uncle at Nintendo told me about to catch Mew"
EDIT: Possible evolution for Froakie->Frogadier: http://img694.imageshack.us/img694/6613/50wc.jpg
Probably fake, but looks cool.
That does look cool and does looks legit. (I doubt it)
Where did that image come from?