I tend to think of blogs as a blend of information, news, and some personal commentary. It’s the mix of the three and the personality and presentation of them which makes them interesting. I like blogs on topics that I care about because there is an informed (sometimes) commentator bringing me a refined collection of the news, some commentary, and making it interesting thru their eyes.
Getting the news as a source is a topic that interests me. I just read a post about three different approaches to education news aggregation: DailyMe, Pligg, and the social networking sites. I’d love to see someone run a big test on these along side the reigning leaders such as google alerts, yahoo news, and so on to see the differences between the experiences.