It seems that when a new "studio" is added, the default behavior is to add ALL scenes from that studio to your feed. Yesterday I had 65 scenes on my feed, almost all of them were from studios I never heard of and don't care to ever see any of their scenes. I went through and "hid" each and every new studio yesterday, which was a tedious process.
And then today rolls around...and I have NINETY-FIVE scenes in my feed. They're all from random amateur studios.
The entire point of the feed should be to filter out the noise that's been flooding this site. But if that noise automatically gets added to the feed, there's no way to use this site anymore.
Edit: I just went through some of the scenes in my feed, and they're from studios that I've already specifically hidden, so I don't even know what's going on. Finding a new scene that's actually worthwhile is becoming too much of a chore.