Script Summary: Sort all the links on the page by their title, URL, popularity or freshness. Should be Opera-compatible. UPDATED! April 30, 2011: Fix to take into account changed site html around all the post dates.
Borrows from and builds on murklins' Sort Visible Links: http://userscripts.org/scripts/show/36153 -- if you already have Sort Visible Links installed, you should disable it to try out Sort with Freshness.
In Delicious, the freshness of a link is the amount of time it has been in Delicious, counting from the very first person who saved it there. Being able to sort by freshness means you can figure out which links are the newest to Delicious, and thus perhaps the most relevant to you.
When you load a page, wait a little bit for the script to figure out how fresh all the links are (the freshness values will start to show up next to each link title). Once the freshness of each link is known, the option to sort by freshness will be enabled.
Should work with AutoPagerize (http://userscripts.org/scripts/show/8551) if you need to sort more than 100 links at a time.