Tonight I used the iTextSharp libraries to transform RSS into the iTextSharp XML dialect, then transform it into PDF. This library is awesome and open source. If you haven't checked it out, I suggest you do. It is a .NET implementation of a Java library set called iText so some of the method names might bug you :D. I forgot how clean (and dirty) C# can actually be until I opened the source to make it support stream as input to the XmlParser instead of the filepath string it supports today.