Bugger. Onyx RSS has gone 404. The author’s website is no more.
Anybody know of any other similar scripts? If none are around I’m tempted to either write my own (eventually) or contact the Onyx author and ask to take control of it, although I’m not the most able of people to manage it time-wise it really plays a key part in Blogwise ergo I’d need to put some time into it anyway!