user content

Hello friends, I'm currently thinking about creating a blog, where user's can post their content. Do you know, if there are any ad networks or possibilties to share the ad revenue? I don't want to be bothered by the whole legal side of things so I thoughts if ad networks could handle that...

I'm creating a site where most of the content will be user-generated from blogs and forums. It will act as a political news/opinion site. Right now I'm going with Wordpress but I'm interested in WordpressMS. With WordpressMS users will be able to create their own blog instead of just...