I normally like watching stuff ASAP regardless of how I get it, but when it comes to RWBY I believe in fully supporting Rooster Teeth properly... As a fan of Monty.
So I'll be the tattle-tail and bring this to everyone's attention:
Episode 6 on KimCartoon
Someone on your Prime membership is leaking your episodes. I know I'm breaking some kind of "internet bro-code" with this, and RT very probably already know about it, but as I said; I believe in supporting RWBY properly, and it's one of the few things I like that I can afford to support (I'm not even a Prime member myself, but I'll still do what I can).
Just wanted RT to be aware of this, in case there's something they can do or want to do about it.