On iOS (and web I think?), tapping it causes the app to crash. That button probably shouldn’t be there? Unless it is calculating an aggregate similarity metric against the set of feeds in the folder.
Yep, thats exactly what it does. Folder related sites is actually a better way to discover than for individual sites. Now, if it’s crashing, that’s a problem. I’ve disabled it on All Site Stories, but it should work on other folders. About how many feeds are in that folder? And if its crashing the iOS app, then that’s a different issues than too many feeds in the folder. And what is the folder title, I’ll investigate on your account.
Okay, I’ve identified the issue, and it’ll be fixed in the next release. I’m going to try to get that release out later today, and then it should go through app store review, which takes about a day.