Social networking spans all generations, polling showed. About 19 percent of those age 55 and over visit these sites, up from just 6 percent a year ago. Women are more likely than men to use social networking sites (48 percent vs. 38 percent), but usage has increased dramatically among both groups in just a year. "Online social networks are more than just a fad among the younger generation. They've become an integral part of our personal and professional lives," the Conference Board's Lynn Franco said in a press release. "They're powerful communication tools, and are becoming an essential part of successful marketing strategies." Read more about the report here.