So, tonight is my first experience with RSS, so I'm not sure how it's supposed to work, but one thing I noticed is the first post of a new thread shows up in the category, and the replies show up in the general feed.
[I'm using an RSS reader, not going through dvrl.it/faceplant]
I'm trying to make dlvr.it work. I did not think to compare those two RSS outputs! The problem I'd like to fix is stopping dlvr from tweeting Posts. I want only the Title posts showing up on Twitter. Now, I know where to look through our dlvr.it profile to see if one of the feeds points to the RSS for the whole Forum. There are many, many feeds for the Categories (There are many feeds buried in places only Mods and Admins can see), plus one RSS feed for the Forum. The Forum software generates the RSS channels.
This has been set up for some time before I started Modding, but the fellow who did it is long gone and I'm reverse engineering.