Greader-link-scraper is a project mainly written in JavaScript, it's free.
Quick and dirty Chrome extension which scrapes links out of Google Reader
Part of a bigger pet project I'm working on.
Open Google Reader, select a folder or a feed in list mode, and run this. It will give you a text file with all the links for the feed items.
Uses some HTML5 FileAPI and FileSystem goodness (see http://davidflanagan.com/Talks/jsconf11/BytesAndBlobs.html).