Diigo knows what is about to happen with this recent announcement and posted about an easy way to get your bookmarks moved over to Diigo safe and sound at http://www.diigo.com/transition-from-delicious-to-diigo-faq. Honestly, folks, it will be just fine! I moved to Diigo several months ago and have never looked back!
Check out Diigo at www.diigo.com. By the way, be sure you get the Diigo for Educators so you can use it with your classroom. I'm telling you, you'll wonder what you worried about!