i found something interesting considering the whole tobi being obito thing.
onething i noticed when reading the manga was that obito was the uchiha version of naruto. always screwing around. tobi also has a childish attitude by making jokes along with pissing off deidara. now this i found during the chapter of tobi and sasuke talk about itachi i noticed something concerning tobi.
here is the link....
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ok if ur on the website look at the last picture the one with tobi set on fire.
now here is the thing. Tilt ur head to your right a little and look at tobi's face. he has some sort of headband slanted covering his left eye. that is the same way that kakashi conceals his sharingan. i personally think that tobi is obito and madara and it seems like tobi is covering his left eye because he has no left eye since it was transferred to kakashi's eye thanks to Rin. hope u find this information useful and answer the whole tobi/obito thing.