What marketers need to know about Facebook's switch iFrames

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eMarketer about Us Social Networking on Facebook: 57%, 11% on Twitter

Research firm eMarketer estimates that more than half of adult internet users in the United States were logged on to Facebook at least once a month at the end of last year. In 2011, the company anticipates that the U.S. 132.5 million web users will use the site monthly. Twitter, he adds, will enjoy the fastest growth rates in the near future but continue to attract ' few Americans online.

An increase of 13.4% in the number of users would mean that Facebook will reach almost 9 out of 10 users of social networking and 57.1% of Internet users this year.

Until 2013, eMarketer estimates that 62% of Web users and nearly half (47.6 per cent) of the total u.s. population is on Facebook.

On the other hand, Twitter was used by 16.4 million adults in the U.S., or 9% of the adult population of the internet, at the end of 2010. eMarketer expects a growth to overcome 26 percent in 2011, as Twitter reaches 11% of Internet users and 16.5% of adult social network users in the United States. Until 2013, eMarketers predicts that about 28 million Americans will be tweeting.

Estimates are based on analysis of visitor statistics and search data from more than a dozen sources and include users of U.S. using any Internet-enabled device to access your accounts from Facebook and/or Twitter at least once per month, including access through third-party applications.

See also: Global Ad spending on Facebook will reach $ 4B by year end

What you want to know about Xoom? Ask Me tomorrow live

I have here the Xoom Motorola in my hot little hands and I put it through its paces in recent days and that I would love to demonstrate and explore the device with your questions in mind. What I'm planning is a 12 pm Eastern/9 am Pacific live stream for one hour tomorrow Friday, February 24, answering questions about the device and go through some of the screens. You will also be able to ask me questions via chat and Twitter.

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