I once hit the boost button by mistake on something utterly horrific that somehow ended up on my TL, as I was scrolling on my phone at 6am whilst sitting outside with my morning coffee and cig, obviously not completely awake.
I unboosted immediately, but it was enough to make break into a cold sweat - I cleared house swiftly, but I now block in instances like that.
That aside, I'm quick to unfollow.
What's the "note on a profile" thing? I don't think I'm aware of that?