http://tags.library.upenn.edu/tag/greasemonkey PennTags Feed http://tags.library.upenn.edu/makerecord/url/9444 http://tags.library.upenn.edu/makerecord/url/9444 &quot;Greasemonkey script inserts a play button next to any MP3 file you happen upon on the web so you can listen before you download.&quot; http://tags.library.upenn.edu/makerecord/url/4997 http://tags.library.upenn.edu/makerecord/url/4997 firefox only<br /> http://tags.library.upenn.edu/makerecord/url/463 http://tags.library.upenn.edu/makerecord/url/463 This is a new browser, based on the Firefox model, that incorporates tagging and feeds into its structure. I wonder how hard it will be to add extensions. <br />