Michael Lucas-Smith has created a nice 'ticker' for VisualWorks - seems to be pretty easily pluggable for general use - look at package Ticker in the public store, and in particular, at class TickerExample. What do I plan to do with it? Well, I think I'm going to replace Bf slim mode with the ticker application (or at least offer that as an alternative 'slim' mode. I've got a few questions about the package that I've sent along to Michael; something should show up in the dev stream of BottomFeeder within a day or two.
Another thing I might well add is local 'file based' feeds. The idea is, some people (possibly with this code might be scraping sites without feeds to local files. What I think I'll do is add a capability to have those scanned on a regular basis.