Is blogging a learning activity?

Teens are embracing blogs, see survey by Perscus and the result shown on the right.

Educators are investigating whether blogging can be a useful education tool or media, e.g. Getting started with blogging in education. Just like many educators are embracing games based on the fact that teenagers are so much attracted to games, there is a fine line we need to draw. We need to know what actually attracted the players [see Learning to Play to Learn - Lessons in Educational Game Design]. I guess we also need to know what is "bloggedness". We need to investigate the content of these teens' blogs in order to understand what captures the teenagers' devotion to their blogs. Before that, we can guess how to use blogs without any solid basis for doing that.