Importing to me seems like an odd workflow though. Bookmark with delicious, import to markitforlater, read from there, links expire (or not depending on what you do), but are still hanging out in delicious. Again, the only net-positive workflow I could see would be: bookmark with markitforlater, decide you want to keep it around "permanently" so you push it to delicious. As a delicious user, does that sort of thing have any appeal to you?