I am Nate Soares. I look like this:
I'm the executive director of the Machine Intelligence Research Institute.
(This blog is not affiliated with MIRI, my opinions are not necessarily the opinions of anyone else at the institute, and so on. This is a personal blog.)
You can find my website at http://so8r.es, it probably isn't hiding any secrets in the source code or anything.
My first blog post provides a fine introduction to this blog.