Ok, I’ve just updated my Fedora Planet config so that only stuff in the Linux category (and sub-categories, like “Red Hat”) will show up on Planet. Sorry if you felt I was spamming Planet with non-Linuxy stuff, I wasn’t really thinking about breaking it down further to just having on-topic stuff show up there. Thanks Tim for bringing that up.
Not sure how long it takes Planet to update the feed address, but I’m hoping it won’t take too long.