thank you. i am in the proces of hunting for what you named your data base (tell me please) so i can adjust these values, because i want to fork your code slightly - and set it up on its own cron script which is called to a separate process so as to not interfer with una,  -- because i blog a LOT and i want timely rss pushed to my site in various post categories within say 10 minutes of me publishing it.   all day, constantly - across 20 different blogs.  so ..
i need this to be configurable. either you go long term and build onto the .xml panel, or i go hunting for these values in the screen shot, and just write my own version of your code, but i think it would be wayy more fun to have the rss module be given the proper attention it deserves- rss is a very very very powerful tool, and as it stands, i see fun things we can have this do :)
thanks Jerome :)