Actually I'm the author of the script, I don't know who's the person who posted on UserScripts.org.
Anyway, I like your cookie support, but it seemed strange to me that you would try to guess the proper cookie to transfer, just transfer them all. Also, I'm not too sure on your download directory support, which is a bit intrusive, and I think most people won't have a use for it. Finally, your updated method for detecting torrents is going to yield a lot of false positives, I'd like to avoid that. The idea is that if the blue drop is there, you can be sure that clicking on it should add a torrent to Deluge.
As I believe the person who posted the script on UserScripts.org won't bother updating it, I've taken the liberty of posting my updated version of the script at :
http://userscripts.org/scripts/show/79003 . If you have more patches, please send them my way
![Wink ;)](./images/smilies/icon_e_wink.gif)