Writing in LJ is definitely fun. And it's important for me, too, because it's an easier way to write down what's going on in my life than using the traditional means of pen & paper not to mention it also has the bonus of getting comments from friends and getting to know new people.

My LJ posts vary but they tend to contain various kinds of stuff. For example, I might review movies, books and soundtracks in detail, write about what's going on in my life, talk about important things happening that week, and write a bit of poetry or fiction in the same entry.