Tracking Your Reading

Since I recently posted on my own blog about my reading progress for this year, I was wondering if anyone else tracks what they read, either on a social site like Goodreads or by other means. I never bothered listing my books before I joined Goodreads, as it would have been more work to make my own list. The main reason I track my books now is for the annual Goodreads challenge and to look for trends. I'm generally not comfortable reviewing books (I tend to critique them instead of approaching them like a reader), and I haven't had much time to interact in the reader groups, even though my original reason for joining Goodreads was to make myself and my work known. So perhaps it's time to broaden the question: are you active on social reading sites like Goodreads? Why or why not?

P.S. I do include Indie Writers Monthly magazines toward my reading goals; so should you!