I spoke, briefly, about this in my book on Mimetic Criticism and the Gospel of Mark. I rarely have time to invest in debunking those who utilize the logical fallacy of argumentum ad ignorantiam. Recently, someone trying to gain attention for themselves posted on my facebook page’s wall and attempted to have a discussion around the idea that Rome invented Jesus. This is a pet theory of a few with fanciful imaginations (and lack of medication). I don’t have time to invest in answering every conspiracy theory out there. It’s sorta like asking an evolutionary biologist to debunk Young Earth Creationists and every point they attempt to make.
Why should we spend time validating thought structures that not only are baseless, but rather delusional?