Round 1Tim has his first post up WTF is Desirism?
My reply is WTF is Morality?
Round 2Tim has a reply, although he did not consider it this way, also called WTF is Morality? On the basis of this I pre-empting a fuller reply from Tim and saving him unnecessary homework (see my comment to his post).
I replied with a full description of desirism in Letter to a Lapsed Pagan II