That site is seriously bad. Don't be fooled. Your stuff doesn't get copyrighted, they bury your poem in a 5000 anthology that anyone who posts gets into. Be careful about what you post there because they can do whatever they want with it once it's there and they don't have to tell you.
My sister was posting there for a long time and I got in a big fight with her over what you just said. They put your poem in a huge book and then make you pay to get the book so you can see yourself published.
haha for real? wow ok now i'm taking my stuff off there.. thanks guys :)