RSS Best practices: description
Steven Noels and Ugo Cei are discussing XML encoding of descriptions, using one of my feeds as an example.
For starters, I do provide an RSS 0.91 feed with encoded descriptions because that's what many people have grown to expect. But I also provide an RSS 2.0 feed with some added goodies and better conformance to best practices. The descriptions have had their HTML stripped, and the full content is available as content:encoded. Aggregators like aggie do just fine with this.
I have plans to provide a separate excerpt in the future.