Going down when you don't have to is really bad for me, I hate to see our players doing it. What Tiote did wasn't nice at all IMO, and I'm not comfortable with it.
Problem is that if you're hit in the face and don't go down, then the attacker gets away with it and your own team suffers. I don't like what Tiote did but I understand it and it's not as bad as diving when there's been no contact at all, or moving your leg towards an opponent to make sure you get touched, for example.