Article Photos: A look at prolific Twitter accounts



Lady Gaga, second left, signs autographs as she arrives at Vnukovo airport outside Moscow late Monday, Dec. 10, 2012. Lady Gaga, set to perform at Moscow's Olimpiisky stadium on Wednesday. (AP Photo/Pavel Golovkin)

Lady Gaga, second left, signs autographs as she arrives at Vnukovo airport outside Moscow late Monday, Dec. 10, 2012. Lady Gaga, set to perform at Moscow's Olimpiisky stadium on Wednesday. (AP Photo/Pavel Golovkin)