Another suggestion would be to read up more on Mr. Sterling to see some of his (and his agencies) past work, and point out irregularities in it. I think he may have a bit of an advantage in that he can read your blog and get an idea of your tactics and arguments.

Yes he can!  It's like having the other teams playbook.  All the advice that Rich is given on this blog is also given to Mr. Sterling.  Food for thought