Facebook, cool. Twitter, not so much. That’s the word from American youth. About 75 percent of young folks ages 12 to 29 are involved in social networking, according to a story from CBS News. Folks in this age range are also predominantly responsible for the content we see on YouTube, but youth don’t have much time for Twitter. Only 8 percent of teens and 21 percent of adult youth are on the micro-social networking site. (CBS News)