One of the great things about NetNewsWire 2.0 is the new tabbed browser, which (at least for me) can open more tabs than Firefox and saves tabs between application sessions (and crashes). NetNewsWire saves the list of open tabs in the file ~/Library/Application\ Support/NetNewsWire/Tabs.plist. I've made use of this because the current version of NetNewWire occasionally loses tabs when you restore the session (like if a site is temporarily down).

-- a modification of http://www.macosxhints.com/article.php?story=20040929145251144
-- tab scripting logic courtesy of Rob Jorgensen on the NNW beta list

tell application "NetNewsWire"
    set tab_num to ((index of selected tab) + 1)
    set url_ to (item tab_num of (get URLs of tabs))
    set title_ to (item tab_num of (get titles of tabs))
    set u to url_ & "&title=" & title_
end tell

tell application "System Events"
    activate
    open location "http://del.icio.us/USER?noui=yes&jump=close&url=" & u
end tell