On the Support Forum Delicious’ Simon Davis writes (the added emphasis is mine):

“[Lately] we made a change to the Notes field of your Bookmarks that allows you to see the formatting of your notes exactly as you wrote them. However, because of concerns that some jokers might create notes with one character per line and goof the display, we stopped that formatting from being displayed when someone else views your bookmarks. This decision (like many things within the Delicious team) started a lively debate that ultimately spilt us into two distinct groups:

A) those that believe only the creator of the bookmark should see the notes formatted and others should be ‘protected’ from both good and bad formatting,

B) those that believe that if you visit a users page, subscribe to them or add them to your Network, you should see the Notes exactly how the creator intended.

So, what camp are you in? A or B? Vote with your comment in this thread and we’ll compile the votes at the end of day on February 5th. […]”

So, if you have a Delicious account, and you use it to store a description or information in the ‘Notes’ field -as you should do- I would strongly suggest you to access the forum (very esay, since it uses the same Delicious credentials) and vote on your preferred option as soon as you can.