What to use for RSS feeds?
I noticed in Eric Sink's post about Vault's RSS feeds that they use an ASPX file for RSS feeds.
Is there an advantage in using ASP files? Maybe the not-so-well-known ASHX files are better adapted as they require less resources and we don't need to render HTML?
What I use myself (eg. for the SharpToolbox feeds) is something else : an ASMX with webmethods available for GET requests. The advantage of this method is that the expected parameters are defined just like with any other method, and you get an error if the parameters are not provided as expected. Of course, this is less flexible than a simple URL query where you can have optional parameters.
What do you use and why?