Henry Ford "I know half of my advertising is not usefull, but I do not know which half"
I try to find this out about Twitter.
Barack Obama has a Twitter account with 4,141,444 followers.
I have now 7500 followers and I think next year same time about 0,1 million.
The Twitter account of Barack Obama mostly links to whitehouse.gov.
whitehouse.gov has according to Alexa about 25 times more traffic than my own site. Alexa states 4,43% coming from Twitter.
Can this be really all the effect of more than 4 million followers?