Author Permission Question

[paraka]

So I'm contemplating a podficing project of reading a bunch of drabbles from a kink meme. However, due to the nature of kink memes all of the fics are posted anonymously.

What are people's opinions on getting author permission, if the fic is posted anonymously?

Not only will I not know if whomever answers my request for permission is the real author, some authors might not be tracking comments to the ficlets so they may never see it. My impulse is to just go ahead without author's permission but, well, it's such a touchy subject.