I am considering deleting my facebook account. But this account is connected to my imdb account. Is it possible to transfer all my ratings and stuff to a different account? Or will the account still excist if I delete my facebook. Thank you.
You already have an IMDb account, you are just using Facebook to login to the account.
What you should do is set a password to the IMDb account and then you can login directly using your email address and the new password which you set. To set a new password in this case visit https://secure.imdb.com/register-imdb/forgotten
Once you have done this, you will no longer need the Facebook account to login to IMDb.