Some 30% of online users say they have at one time posted a comment or review online about a product they bought or service they received, according to Pew Internet. Some 31% of online adults under 30 have posted a comment on a product, and 34% of internet users between the ages of 30 and 49 have done this. The 50-64 age group has 27% of internet users has done this, while 18% of online senior citizens have don this. With respect to ratings, 32% of internet users have rated a product, service, or person using an online ratings system. This is an increase from 26% when we first asked this question in May 2004. Ratings show a stronger lean to the young. For online adults under 30, 37% have rated a product, service, or person, while 34% of internet users between ages 30 and 49 have done this. In the 50-64 age bracket, 29% of online users have done this and 20% of online seniors have rated a product, service, or person.