Twitter is “aging in reverse”. Apparently 12-24 year old demographics are Twitter’s fastest growing audience segment. STATS: Young People Are Flocking to Twitter and a more detailed break down of data on the What, Where & Why Of Social Media?

According to reports Yelp Is Growing 80 Percent A Year, While Citysearch (US) Remains Flat. This is interesting given the the mix of both user and editorial comment on Citysearch versus the purely user based comment on Yelp. Speaking of comments, when you look through the comments following the article there seems to be a strong suggestion that Yelp’s success could largely be attributed to it’s SEO work. As an aside Yelp are also doing some nice stuff in the mobile space. Particularly with augmented reality.