An rp is an online site where you make a charater, and role play as him/her with other members. It is on an easy to use probards website, and has a chatango chatbox on the side. If you would like to come and visit this specific rp go to http://twilightmassacre.proboards.com/index.cgi and sign up, or just look around. And just so you know, it has nothing to do with twilight, that word DID exist before Stepheny Myer wrote the books.