A feature...
A feature I'd like to see in the future is a facility to see who your readers are. A lot of people who read don't actually leave comments, and sometimes those readers might actually be interesting to read. It's another way to get spotted!
Any maybe another good thing would be a RANDOM button! Most days, I'd like to just randomly jump into a blog, because I can't be bothered to pick a category, and then pick a blog. Sometimes we readers need some help. 