billy corgan wrote for his high school newspaper and he always knows what bands are going to be famous before they are!
Is he always right?
just about! he predeicted u2 and REM would be famous and it happened!
Did those bands give him any credit?
no this was when he was in high school but i'm not sure if he told them later on!
He clearly has a good ear!
yes but he was often depressed and went through many struggles with perfection in his music 
How successful is he truly? 
well he is well known throughout the globe and has a net worth of 50 million dollars so i would say truly successful on all levels
What is his favorite song he made?
siamese dream because he wrote it for his disabled brother
Wow, what is his brother's disability?