I'm not sure if anybody else has any use for this, but I guess it can't hurt...
Since I have to keep track of what's happening on Duenna (to be able to post the results as quickly as possible) I got tired of constantly refreshing by browser. So I created a little script that will check Duenna for me, and automatically open up the listing in a browser, when a new flight is posted. The program just sits in your taskbar, and does nothing most of the time. Every hour or so (or whatever frequency you define) it downloads the latest Duenna listing in the background, and checks if a new flight has started. If not, it goes back to sleep (so it uses practically no resources). If there is a new flight (and you can filter them by user or event name), it will bring it up in the browser.
The program comes with an (optional) .ini file, where the frequency and filter options are defined (there is no interface for that - you just have to open it in an editor, and modify it by hand).
While idling the output looks like this (when you hover over the taskbar icon):