A Universal McCann study on consumer-generated media finds that very few people - about two percent - are bloggers, according to MediaPost, and that those who do commit their opinions to webpages regularly tend to be quite young. Adults 18-24 are three times more likely to blog than the average adult. The glass-half-full crowd may interpret that to mean that blogging will increase as this generation displaces the older adults. The half-empties may interpret that as meaning that blogging is for less serious and more self-involved individuals.