I have read a dispute regarding opening a blog for other than journaling purposes. There is a group of students who were tasked by their professor to open blogs so they can be given an assignment and they can post it in their blogs. They also post only about their subject which is clinical nursing and I do believe no one can understand it but them. The biggest issue with this group is that they were apparently used to vote on a blog contest that was really big in the local blogosphere.
A blog is actually an online journal, a log of your thoughts. We can do whatever we please in our own blogs. But issues arise when you are using your blog in a manner that will negatively affect a lot of people.
I hope my blog has a positive effect on others. Even a little.