Could it really be Mark Zuckerberg in Google Plus? Yes. It is really him! A lot of people are surprised that he has Google + account. I don't find it surprising. He probably wants to keep a close eye on how his competitors work. After all, I bet the Google Plus makers also have a facebook account.=)
Many have already added him in their circles. I even added him.=) He is now the most followed user in Google Plus. Ironic? I don't think so.