I'd like to recommend two other blogs that deal with the rationalist approach to Judaism. One is ParshaBlog, by Rabbi Josh Waxman. He analyzes many issues relating to rationalist Judaism, always with great thoroughness and levelheaded analysis.
Another is a new blog on the block: RationalistMedicalHalacha. I know the author, and he is an outstanding person, so I am very much looking forward to reading whatever he is going to write!