I have a pretty big list of blogs and other sites that either allow guest posting or even paid sponsored posts. I have always just interacted directly with the blog owner and can get better deals that way. Anyway, I have been considering whether or not to publish these in a directory. Mainly because I don't know if others would find a value in it. Cost would be a monthly subscription since the blog lists are ever growing. But it would just be a directory. No platform to interact with the webmasters or bloggers. Would just have their contact info and you work directly with them. This way advertisers could negotiate payment directly with the publisher without any middleman. I just remove the headache of finding the blogs by publishing the directory. Would anyone be interested in something like that?