This document includes everything you need to guide you to successful class blogging on The Great Gatsby: Two blogging assignments, two rubrics, blogging guidelines, and links to other excellent resources.
What I do is create a blog using blogger and then invite all of my American Literature students--between 80-90--to be editors. I teach them the basics of blogging and then the magic happens. You know how much better students write when they know their peers will be reading their posts and comments. I have been using these assignments for five years and am impressed every year with the work my students produce.
Don't worry if you are new to blogging. You and your students can learn together. I certainly did with mine and continue to. Good luck and happy blogging!