Well I'm not theoretically delicious but I have just signed up for delicious.com
I have installed the FF plugin and everything and I only have one thing to say, it is AWESOME
Delicious is the most usable site I have ever used (seriously) and their design is flawless, so I enjoy just going on there for this reason
I used to stay away from all the social networking crap (like dig because I hate that), but delicious is a really good way to keep bookmarks (across 2 computers too), search for new bookmarks and see what other people's bookmarks are.
Anyone else love delicious as much as I do atm?