What makes a good blog?

I've enjoyed the process of watching you come to grips with blogging over the last 8 weeks or so, and get your thoughts online. Some of the posts have been very interesting to read, and it has always been good to go into class with your perspectives on the set reading at the front of my mind: that has certainly made the teaching process a lot easier for me.

I'm curious to know what you think makes a good blog. (Do any of you read any of the teaching blogs out there?) Based on your experience of reading your classmates blogs, what are the things that most grab your attention? Is it writing style, content, the interactions and commenting on the site, presentation or a mixture of all of the above?

One way that you can try to measure the 'impact' of your blog is by searching it on Technorati. Technorati is a web-based service that indexes blogs, and currently has over 100 million blogs indexed world wide. Technorati can tell you how many blogs are linking to your blog, and records this as the 'authority' of your blog. According to Will Richardson (in his book Blogs, Wikis, Podcasts) a blog that has an authority of 100 or more can be generally regarded as well-accepted by its community of readers. But that's not to say that a blog with an authority of less than 100 can't be a good blog.

So getting back to the original question, what do you think makes a good blog post? You might like to have a look at some of the blogs that I read, for ideas. I'll put them in a blog roll, in the links column.