Source: Bennie Evangelista, SF Chronicle ( Free Registration )

Teenagers and young adults spent less time blogging during the past three years as social networks like Facebook became more popular, according to a Pew Research Center study released Wednesday.

Still, one social network, Twitter, has failed to catch on with the vast majority of younger teenagers, according to the Pew study of social media and mobile Internet use among teens and young adults.

Read Full Article: Blogging is for old people