[veyron]

That also means 65.5% of US Internet population is using Facebook or Twitter, a mind boggling statistic

[SoftwareMaven]

65.5% of the web browsing, any-other-demographic-and-psychographic-modifying-aspect-of-Google-Survey population. That makes it harder to say how boggling of a statistic it is. Far greater than 65.5% of my household accesses Facebook and/or Twitter.

[veyron]

"Far greater than 65.5% of my household accesses Facebook and/or Twitter."

In my social circles, Facebook/Twitter usage clocks in at about 15%, so the numbers of the survey were at least minimally surprising ...

[16s]

I would wager that a certain percentage of people in the US have no Internet service at all. Your guess on that percentage is as good as mine. I can think of several older people I know that do not have Internet service or cell phones. Nor do they care to.

[veyron]

I wrote "65.5% of US Internet population", not "65.5% of US Residents".