Delicious Firefox Extension
If you use Delicious and Firefox, do yourself a favor and check out the new delicious firefox extension.
It puts delicious posting and viewing right next to the home button in Firefox.
And let's you right click on any link to post to delicious.
And adds delicious search as an option in the firefox search field on the upper right.
And a bunch more, all of which is explained here.
And it takes all of 5 seconds to install.