I spend a lot of time keeping up with my math teaching blog, Continuous Everywhere But Differentiable Nowhere. Click on the banner to see the most recent posts!
You can get a pretty decent glimpse of who I am as a teacher from the blog. I do a lot of reflection on it, as well as communicate with other math teachers around the United States. I can say that writing the blog is — hands down — the best professional development that I have ever done. (Plus it’s enjoyable.)
Check out a short presentation I gave on blogs and twitter here.
I get about 200 unique hits a day, and have around 900 people subscribed to my blog in Google Reader.