Facebook, MySpace, Twitter, LinkedIn, and other such sites are – in general, anyway – doing quite well on a global basis, according to new stats from Nielsen. Nielsen revealed this afternoon that people all over the world are dedicating a lot more time to social networks.

A report stated, “On average, global web users across 10 countries spent roughly five and a half hours on social networks in February 2010, up more than two hours from the same time last year.” Italians and Australians actually took the lead, too, beating the U.S. average of 6 hours and 3 minutes by 25 minutes and 22 minutes, respectively.

Then here are a couple more interesting findings: “Overall, the active unique audience to social networks grew nearly 30%, from 244.2M to 314.5M in the last year. In the U.S., the average active unique audience grew to 149.M from 115M in February 2009″ (which also works out to 30 percent).

Time Spent On Social Networks Up 60%

Facebook made Nielsen’s last points of comparison anything but close calls, though. It beat the other social networks by wide margins in terms of “% Reach of Active Social Users,” “Sessions per Person,” and “Time per Person.”

Facebook, then, would appear best positioned to find advertisers and generate revenue outside the U.S.