Like Pandora's Box? So much that you want to be a sister site? My suggestion to you is contact me and make friends. I do not affiliate myself with random people, because I believe sister sites are exactly what the name implies. They are NOT a way to get more traffic on your site. They are NOT a form of link exchange. Sister Sites, to me, are a little support group of people with similiar interests helping eachother through writer's block and bad spells.
If you want that kind of situation, please, IM me or E-mail me, and we can chat. Don't expect immediate acceptance into my little circle, because I don't operate that way. But don't be afraid to chat... I don't bite ^_____^