Filthy Letters is a hardcore site that features raunchy letters and stories. The Filthiest, Raunchiest letters you've ever read!! Amazing true-to-life Stories of Eroticism.. They pledge to hold thousands of the steamiest erotic tales ever written! Real life encounters in steamy detail. There are also extremely erotic manuscripts advertised here as well. Sex stories are included to tickle your fancy, or whatever you feel like having tickled tonight.