From what I understand from other Green día fansites, none of them have a Twitter account. There is an official Green día Twitter page, I don't think the individual members have personal Twitter accounts.
Thats Defiantly mikes.Not so sure about billie.If tu look at Billie joes comentarios it dosen't look like its him.And if tu buscar billie joe armstrong it comes up with like 10 billie joes.
Yeah, Billie has one, I'm not sure what it is, but I saw one of his Tweets in Kerrang, it's about them staying at the same hotel as the Jonas Brothers and he's the 4th Jonas called "Billie Jonas" lol bless him, there's already a fourth Jonas