Prefered Delicious Back-up?

Yahoo says don't worry, baby; everything will be alright. Yet I am still suspicious. Do you have Delicious? If so, where are you backing up your account? I am considering options, and my preference is for a service that includes a function that indicates how many other people have saved your link, so that I can find folks with the same tastes/preferences. I also need the tag function.

Any suggestions? If possible, I'd like to head over to wherever as many fannish folk are heading (Delicious had a critical mass of media fans that made finding new fic very easy).