How to allow anyone to post without requiring to login?

So I am looking to make a group discussion blog by hosting WP on my server, and I would like to have so that anyone is allowed to submit a post without having them to sign up for an account. I have my template and all the coding done, I just need to figure out a way in order to allow people to post without an account. Each post is then approved by me or a fellow admin before it arrives public (I do this with the GT Post Approval Plugin). But currently I can only get this all to work properly when someone is logged in.

Any ideas or plugins on how I can just have people submit news/stories without having them login?

I do apologize if this question has been previously asked, I attempted to search prior to posting this but did not find an answer to my question. If there is in fact a post regarding this I would appreciate it if you could kindly direct me to it. Thanks!