It may be that Lennon would be very fond of both the social networking site. It is highly believed by Lennon's wife, Yoko Ono.
"He will send statements and messages and opinions all the time for everything," said Ono as reported by the NYDailyNews, Wednesday (12/29/2010).
"Yes, he will indeed be 70 years old, but she still wanted to know about all the things that is happening," Ono added in an interview with other media, dailymail.
Indeed, if John Lennon was still alive and have a Facebook or Twitter account, obviously he's going to have very many fans. But unfortunately, the legend has gone.