Twitter en chiffres et en image. And It's Still Smaller Than The Huffington Post. Last summer, we noted that one of Twitter's big challenges was its failure to "go mainstream" in the United States, especially relative to Facebook.
Despite the enormous popularity of the service among tech-and-media folk, Twitter's growth among mainstream consumers had been weak. This assessment was recently confirmed by a Pew study that found that only 8% of American adults use Twitter. Well, as Erick Schonfeld of TechCrunch notes, this problem appears to only be getting worse, not better. #Hindsight2010: Top Trends on Twitter.