FML/TFLN Style user generated content site

Need to a site developed based on a wordpress theme if possible. Idea is for users to post text or pictures to a user generated blog. No need for user registration, just a user name i.e. anonymous post as long as a user name is provided. Posted objects should require administrator to approve before posting on site. This setting should be able to be switched off and on by an admin. Each post will have a positive or negative vote. Also have an option to view best rated and lowest rated. Each post must also be able to have a comments section similar to blog comments. Social sharing should be available.