LOL.. Do u really think Kishimoto would make it so easy that we could just guess the whole story?
Saying that it is NOT Obito as if you are right is also pretty stupid. Only because you think it's not doesn't mean that your thoughts are superior to others.
"They are all FAIL" If you really think so, I don't think you have any right to comment the Obito theory as you already has made your mind up.
The name Obito hints at Tobi as you can just move the letters and form Tobi. U can also write it like this: (T)obi(to). This is also very typical to do so that the fans get a few hints at who the person is. Just like Roxas in kingdom hearts can be translated to Sora who the person really is.
Obito and what we have seen of Tobi is very similar. The haircut is also the same.
Tobi's one sharingan and Kakashis sharingan has been shown in several chapters togheter. (Kakashis sharingan in one square and Tobi's in the other) I dont know how to explain it right.. But if you understand, that can hint at something.
And last, Obito:
"Those that break the rules and regulations are scum. But those who abandon their comrades are worse than scum! If I'm going to be called scum either way, I'd rather break the rules! And if that's not being a proper shinobi, then I'll destroy that idea!"
This could be hinting at something.
But that does not mean that I don't agree that Tobi fighting fourth Hokage as adult right after Obito died, and how could he get all the hate and the power?
A little twist could be that that Tobi was Madara, until Obito killed Madara and went under the identity as Tobi.
But that theory seems very unlikely aswell.
The Naruto universe is probably long from empty of new things. I'm sure Obito being Tobi easily could be explained by Kishi if that is so.
To everyone: Just because you don't think someones theory makes sense doesn't mean you have to bash that person. It only shows how immature you are so please don't. Let's keep it friendly