Right-hand Column overhaul

Quico says: In a fit of procrastination, I just checked, updated and re-organized the entire right-hand column. All the links have been checked and all of them work now. Some no-longer-active sites were dropped, and some newly active ones added: welcome Vicente and Julio to the blog roll.

I’m especially eager to bulk up the “Blogs in Spanish” section. Am I missing your favorite? Don’t be shy with comments and suggestions.