Fr John Zuhlsdorf is always interesting, sometimes quirky but has a deeply serious spiritual side to his blogging. It seems to me that he is a priest-blogger for whom the first part of that description is deteminative over the latter. In his latest post, he tackles some of the stranger allegations about demon-worship in high places in the Church. Fr Gabriele Amorth seems to have published another volume of memoirs, or more probably another book of interviews, which gave rise to the latest speculation. As you'll see from the link above, as sensible and scholarly a critic as Dr Ed Peters is very wary of taking Amorth seriously.
Fr Z fisks the CNA article which covers the whole business; also mentioned is Fr Jose Fortea whose book on the subject I mentioned here. Also in that post is a run down of the readily available literature in English on exorcism. Having covered it then, I have no inclination to revisit it now. So for what its worth, I'll refer those interested to last year's post.