(iverson's) currentbuzz: Typology of Information Communication Technology Users

...85 percent of American adults use the Internet, a cell phone, or both. Those who "exploit the connectivity, the capacity for self expression, and the interactivity of modern information technology" comprise 8 percent of American adults, while half of adults maintain a more distant relationship with ICT. Ten distinct groups emerge in study's findings.

Source: clickz.com

The short summary:

4 groups of users, all of whom have high-speed connections at home "embrace" technology which can also be stated as they have no life beyond technology.
between extremes, are "mobile centrics" who are always connected, but it makes them feel hassled.
49% of American adults don't know how to use tech or don't like to use it. The "off the grid" folks make up about 15% of this group and they don't have a phone or the web.

You can read the whole report called "A Typology of Information and Communication Technology Users" at the Pew Research Center site. They interviewed about 4000 people by telephone. This is something I question since it is known from studies (do your own anecdotal study) that about half the people who move now don't get a landline, and thus aren't in phonebooks. Does this skew results of research studies?