I don't know if this counts as a PLN, but I visit webenglishteacher.com all the time. It's a favorite of mine. There are always a ton of resources to beg, borrow, and steal. I also visited CoolCatTeacher but I had a difficult time reading the interface. I couldn't find what I was looking for easily. Then I went to the Educator's PLN blog. The whole interface seemed cluttered to me. I spent some time on the Forum part of this webpage, which I found much easier to navigate. Should I ever get iPads in my classroom, the Forum on this blog had several good ideas for useful apps in the classroom.
Finally, I've never had a problem sharing my thoughts publicly. I know this can sometimes get me in trouble, but with the added quasi-anonymity of the blogosphere, I feel like I'm even more ballsy in what I will say.
I liked The Learning Network blog. I got that website from visiting Donya's blog. I will probably visit this one in the future since it has a daily news quiz. I will most likely use this resource next school year when we write the Current Events essay in the fall.