I've wondered this myself. There has been a couple of people that I considered ignoring- but then what if we end up on the same thread and I want to hear what they say. Plus, I'd feel bad if I ignored someone. Perhaps if it was called something different, maybe I wouldn't feel so bad- but still. Then I've gotten concerned that what if I accidentally ignored someone that I didn't want to ignore. Like say I was trying to follow someone, but accidentally ignored them instead. What if I can never find them again? I just try to avoid the "ignore" button.