I've taken a look at only a small portion of all the things which he's posted on his site. So I can't vouch for everything there, giving all the content of the site a wholehearted endorsement or not.

From what I saw, yes, it seemed quite solid, and doesn't misrepresent Theravada views.

I googled and found they created the site with one years experience, or around three years at the moment. Take from that what you will.