Yeah ... I messed up.
Once I wrote the Abstract Algebra post, and got a bunch of feedback on it, I immediately set out on writing another one, and the reason that went all wrong was that I decided I would introduce Automata theory, and I wrote two posts on it, then, I realized that Automata theory is pretty abstract, and would be hard to understand without a thorough knowledge of groups and rings, so, I'll be postponing that.
I'm currently writing the next post; should be up by tomorrow. Thanks :)