Yes, we are well aware of the fact that Yahoo will be closing Delicious. In the words of the Hitchhiker's Guide: Don't Panic.
We're working to find a solution and a new home for our archives. Right now that's looking to be Diigo - it's a fair parallel of Delicious with a similar-ish visual set up. I'm also working on a new way to sort lonely prompts (I hope, fingers crossed that it works).
One of the other things we're considering is creating our own database. If you have any experience creating databases, or know someone that will be willing to volunteer, or have ideas about where to host it (because we'll need something free) feel free to comment.
Other suggestions are more than welcome as we work through this. (Please do not make suggestions regarding tagging or the finer details of archiving - that's something I'll be working through with the monkeys once we've landed somewhere. What they do already takes a lot of work and a chunk of time, after all, and I want to make this easy on everyone.)
I'll be backing up the archives as is on Sunday at the very least. I'm hoping that by then we'll have made a decision, and can simply enact a new archive, but we'll see. We don't feel there's a need at this time to rush the process unnecessarily - the news that Delicious will be shut down was leaked, as opposed to a formal announcement with dates etc.
I assure you we'll be moving as quickly as possible to avoid losing any data.