this Apple Script lets you post to del.icio.us from NetNewsWire - from the browser pane, not the subscriptions!
(this is basically cribbing together of two different Scripts I found at Ranchero's Scripting page
-- NetNewsWire to Del.icio.us
-- Grabs info from current browser window in NetNewsWire
-- and posts it to your Del.icio.us account
-- Change YOUR_ACCT_NAME below to your own info
tell application "NetNewsWire"
set urlsList to URLs of tabs
set ixCurrentTab to index of selected tab
set titleList to titles of tabs
set u to (item (ixCurrentTab + 1) of urlsList) & "&title=" & (item (ixCurrentTab + 1) of titleList)
tell application "Safari"
open location "http://del.icio.us/new/YOUR_ACCT_NAME?v=2&url=" & u
first open Script Editor, paste the above into it (don't forget to put in your del.icio.us user name), and save it to the Scripts Folder.
To find the Scripts Folder:
In NNW, go to the Scripts menu (looks like a scroll), and Select "Open Scripts Folder".
You are now ready to post to delicious from NNW. so go post this page, now!