Edison Research recently released its study of Twitter usage, and some of the findings are:

• Despite high awareness levels (nearly 87% of Americans know about it), it is only used by seven (7) percent of the population
• Twitter appears to be disproportionately popular with African Americans, as 25% of Twitter users are African American, which is double the percentage in the overall population.
• Twitter users are three times more likely to follow brands than users on other social networks
• A higher percentage of Twitter users update their social network profiles and connect to Twitter via their mobile phones/smartphones that the average social networking site user.

Here’s the Webinar where Edison’s VP of Strategy & Marketing, Tom Webster, takes you through the results.

Twitter Usage in America 2010 from Tom Webster on Vimeo.

Download the report here.

Hat tip to Jason Keath