Twitter is continuing to grow. They added 100,000,000 users in 2010. That's a pheomenal growth, but even more exciting is that it is incorporating itself more in people's lives. According to Sysomos 21 percent of Twitter users now follow more than 100 people, tripling the total last yearand 16 percent have more than 100 followers.
Furthermore an ever increasing percentage of Twitter users provided a bio, name, location and website URL as part of their public profile. Twitter is becoming part-and-parcel of many peoples lives. Woe be to the company which is not aware of Twitter.