Eurydice - 2:45 am on Feb 10, 2010 (gmt 0)

CMOs at Proctor & Gamble, Hyundai, Delta, Ford, Chevrolet, and others are finding that Twitter does not work for them. It is basically useless and it adds no value to their brand.

According to a recent Pew Internet survey, 80% of users never returned to the site after signing up.

A study by the Nielsen revealed 60% of Twitter users do not return from one month to the next.

A report by RJ Metrics found that only 17% of Twitter users updated their accounts in December — an all-time low.