Lady Gaga vs. Justin Bieber, Who’s Rocks YouTube?

Ah! The popularity of these two on YouTube is beastly, and where else does it really matter? With an already whopping following of over 6.5 million on Twitter, 21.2 million on Facebook, it wouldn’t have been a more better occasion for Lady Gaga to announce that her videos have "reached 1 Billion views on youtube little monsters!"Coming to Justin Bieber, he always seems to closely follow Gaga with