6.5 Million Americans Watched a Mobile Video and Mobile Social Networking Up 8.8%

comScore has released its August mobile video usage statistics today. They report that 6.5 million Americans watched a mobile video in August. AT&T was the most popular mobile video carrier followed by Sprint.

In terms of type of mobile videos viewed, amateur videos was the most popular category followed by music videos comedy videos and movie trailers. The full list of categories is below.

comScore is also reporting that mobile social networking saw the biggest gain from August 2007 to August 2008 at 8.8%. This was followed by IM and news by download. I’d like to see a breakdown of which social networking services make up the increase. I have to imagine that the iPhone has a lot to do with the increase since many popular social networks now have native clients specifically for the iPhone.