You may also get introduced to some awesome Bitcoin facts @ www.CoinLearn.org
Hm, this "proves" more or less conclusively that the person now in control of (part of) www.coinlearn.org is you. It does not, on the other hand, prove that you are the owner of the account that posted the links to www.coinlearn.org a while ago. Don't get me wrong, it seems legit enough, but it just isn't enough proof.
Moreover, I have already provided signed message to theymos & cyrus, as mentioned in OP. After one week of sending PM to both, I'm now really disappointed.