Website Clone - User Generated Content - Web 2.0

My site will be a User-Generated Content site like [login to view URL] or www.textsfromlastnight.com. I WANT A WEB 2.0 LAYOUT for the "BOX". I already have the domain. This site will need to have a BOX where anyone can type in either: 1. A story/quote in text 2. A picture 3. A video from a website such as Youtube > > **This BOX will be just like the Facebook "SHARE" Box/Like a twitter update.** > > > > From this-- it will go to a database where I can decide to add it to my site or delete it with a DELETE or SEND or EDIT kind of mechanism. MUST BE ABLE TO SHARE, POST, RATE, COMMENT. Then, I want this "text/picture/video" (BLURBS) to appear on the website's homepage. This is only a test for now, but hopefully I can do some market research and see if the site can fly. I am willing to use a CMS, but I'd prefer to have my own coded databasing files with an Administrator section where I can moderate the site without worrying about messing up the coding.