I started a lego blog a bit ago, with a different focus from many of the Lego blogs out there.
www.deconstructinglego.blogspot.com
I try to analyze official LEGO sets, examining their relationship to culture, history, imperialism, and other topics. And sometimes I take a few sets from the same theme and create a backstory, or analyze the development of a common set (like the many iterations of the tow truck).
So let me know what you think!