Nearly half of Americans use Facebook; Only 7% use Twitter [research]

A new report from eMarketer believes that most American adults with Internet access are using Facebook at least once a month, and a full 42.3% of the total u.s. population uses a site like this month.

On the other hand Twitter's penetration rate was significantly lower, sitting at about 7% of the total population and 9% of the population are using the Internet, according to the report.

Late last year, Facebook founder and CEO Mark Zuckerberg announced that the company sees about 250 million daily users of its 500 million-strong user base. Young exec noted that Facebook products