An agent who represents the self-pubbed

Here's a blog post in which agent Jim Levine is quoted as saying he finds that publishers are interested in self-pubbed authors who've sold more than 5000 copies. The post says that "he’s on the crest of a wave of agents beginning to represent authors who’ve self-published their work and are seeking mainstream commercial publication." Some other agents are mentioned who are interested in self-pubbed authors, as well as those who are still wary.