A lot of people are surprised to discover that Twitter is not popular with teenagers. I can’t tell you how many marketing guys I see wasting time and money marketing teen and tween products on Twitter. You may get the attention of a few parents, but there are other social networks much better for targeting the teenage demographic. I happen to have a 13-year old sister so I’ve known for a long time that kiddies don’t use Twitter. I’ve asked my sister and her friends why they don’t use Twitter and they say it’s “boring” or “stupid” or they just don’t “get it.” ...