Most talked about personality on Twitter for 2011 is...

source: perezhilton Guess who is she?Yup. That's right.Rebecca Black was the number one Twitter trending topic in pop culture in 2011.2011 may only be half over, but Twitter users are sending over 200 million tweets per day. Two years ago, users were sending only 2 million tweets a day, so you can imagine what an impact the socialnetworking site has made on today's new events and pop