Next week, Derek Bruff returns with a use case for WordPress as a Learning Management System.–JBJ] There are lots of ways to do this–some professors use wikis, other just design and code their own pages–for. of people using blogs. WP SuperCache (Optimization): The first time a highly-trafficked site like Digg links to your blog, you’ll wish you had installed this plug-in, which maintains high-speed, database-call free "cached" copies of your…