I made a site similar to this right after the like button was released. Grew to over 2 million visitors a day in 4 days.. then facebook started blocking sites that used the like button without any real content.. So if this grows don't expect it to last very long.
Either this is more complicated than it should be, or I am totally missing something... Is there anyway to actually "Like" what you submit (besides waiting for it to show up in the random stream)?