Small talk shifted in large part to social networking, said Elisa Camahort Page, co-founder of BlogHer, a women’s blog network. Still, blogs remain a home of more meaty discussions, she said.  “If you’re looking for substantive conversation, you turn to blogs,” Ms. Camahort Page said. “You aren’t going to find it on Facebook, and you aren’t going to find it in 140 characters on Twitter.”

 --As a user of Blogger, Facebook, Twitter and Tumblr, I don't know which demographic I am?