Del.icio.us (I've ALWAYS had problems typing that truly creative and truly annoying domain name) will be upgraded soon and accessible at Delicious.com. This service is probably the smartest acquisition Yahoo! has made in years. More on the algorithmic vs. crowd-sourced search engine fight later... (What the hell is he talking about?)
And does anybody actually bookmark things using a built-in browser feature anymore? I can't imagine all of my bookmarks being accessible from a single computer. That would be pretty obnoxious. Which reminds me....if you're using Firefox or if you are a Google fan then you have options.