Thanks you, this really helped me out when polling a feed from Demonoid.
For anyone else that may be reading this, you can determine your user-agent by going to What's My User Agent?.
It is mentioned in the tutorials/wiki on this site that there can be some issues with too many cookies in your cookies file. For example, if you have logged into imdb, you will have a cookie saved. When using "cookies" plugin, ALL cookies are sent everytime. The imdb plugin wiil break if the imdb cookie is present. I'm not sure how to rectify this on a headless machine, but if you are using firefox web browser, go to
>Preferences > Privacy > Show Cookies and delete all cookies that are not necessary.
If you are on a linux machine, you can then navigate to
/home/USERNAME/.mozilla/firefox/foobar.default and copy the cookies.sqlite file.
Thanks again Rick!