Nielsen Online shows big increases in global audiences for social networks. Time spent on Facebook and Twitter is up 82% from last year. Facebook is still the top social site. Stats from December 209 show 206.9 million unique visitors. Time per person spent on social networking sites has been steadily on the rise since 2007. People in the U.S. continue to spend more time on social networking—and blog sites—with total minutes increasing 210% year-over-year and the average time per person increasing 143% year-over-year in December 2009. Year-over-year growth in average time spent by U.S. users, for both Facebook and Twitter.com, outpaced the overall growth for the category, increasing 200% and 368%, respectively. Among, the top five U.S. social networking sites, Twitter.com continued its reign as the fastest-growing in December 2009 in terms of unique visitors, increasing 579% year-over-year, from 2.7 million unique visitors in December 2008 to 18.1 million in December 2009. Exciting news for those of us who love social media marketing! Happy Sunday and enjoy your tweeting!