To the few who are crying, grow up
To put it simply. It's not your manga, it will never be your manga, accept that and move on.
All theories about tobi have been cleared up, he is OBITO in physical form just as naruto is naruto in physical form. Is Obito crazy? Maybe. Is obito being controlled? Maybe.. You can start theories about that but what you MUST stop is theories about tobi not being obito, because kishimoto just STATED VERBATIM he is obito, and ipso facto, he can't be someone else.
You don't like it? Cry more, your tears are delicious.
I for one, like it, it makes tension build up around the fight now.