If brands want to follow them will have to give their fans what they want
According to eMarketer, it is estimated that there will be nearly 21 million Twitter users in the US later this year and that a significant portion of them will use this channel to follow brands.
Research on Twitter users Constant Contact and Chadwick Martin Bailey puts the share track in 21% of the total, closely in line with the study of Compete, held in April this year 2011, according to which 19% Twitter users are here brands to follow.