Marketing Charts reports the availability of a new study available from the Nielsen research folks. I recommend that you read the summary then the full report if you have the time.
“Our findings indicate that there remains opportunity for growth in internet access in the US. Indeed, President Obama stated during the campaign that we had to view broadband internet access the same way we did telephone service and electricity - an essential utility available to all regardless of economic status,” said Steve McGowan, SVP of insights and client research initiatives at Nielsen. “But part of the challenge in extending web access to all Americans is the fact that there are more homes without computers, than there are homes with computers but lacking internet access.”
Marketing Charts summary of the report is here: http://www.marketingcharts.com/interactive/home-internet-access-in-us-still-room-for-growth-8280/?utm_campaign=newsletter&utm_source=mc&utm_medium=textlink
The full report is available here: http://blog.nielsen.com/nielsenwire/wp-content/uploads/2009/03/overview-of-home-internet-access-in-the-us-jan-6.pdf