best practices for rss

Last month I had a chat with Tim about his RSS feed only serving his sixteen most recent posts, as I thought this might be a bug and not a feature. I stood corrected as it was meant to be, since it is usual to have a limited amount there. This got me intrigued as I had no clue about there being some sort of RSS etiquette for us webmasters. That was until I found the RSS Advisory Board, which has a subpage on Really Simple Syndication Best Practices Profile that "covers a set of recommendations for how to create RSS documents that work best in the wide and diverse audience of client software that supports the format". Without going into the nittygritty I wanted to cover the top-level best practices that's easy to implement and follow. Most of these are covered by standard implementation anyways, but I've seen some here and there missing them, even myself. Date When it comes to the date for your posts, all date-time values should use a four-digit year and each post should always include…