tip: "uchiha sasuke/uzumaki naruto" angst kudos>10
I'd really love to be able to have a language filter on the RSS feed for a tag.
Having filterable RSS feeds would mean having a separate RSS feed for every combination. The disc space it would take up is huge, and the processes maintaining the feeds would never stop. Most RSS readers nowadays do have in-built filtering of some sort or another?
I don't use a specific RSS app, if that's what you're suggesting; I use The Old Reader. But anyway Fanfiction.net manages it somehow - you can turn any filtered search into a roll-your-own RSS feed, for example https://www.fanfiction.net/atom/l/?&cid1=14442&r=10&lan=2&s=1 (corresponding search is https://www.fanfiction.net/tv/Good-Omens/?&srt=1&lan=2&r=10). (Not that I want Spanish particularly, just giving an example of the language parameter being present.)
Huh. It looks like they may be assembling the atom file on the fly per request. I'm curious what the database load numbers on that look like.