I got dubfi.com for a brand new social network. Crazy if don't try again, crazy if I do. But you heard about it here first. subfi.com and pubfi.com were taken. Dub-Fi joins Hi-Fi, Wi-Fi and stands for Dub Fidelity.
What's the theme? Music? Foreign language movies with audio dubs?
Not that kind of dubs, just a stream of posts.
I think dubfi is a great name, much better for a social network than subfi or pubfi. Good luck!