It won't be obvious that everyone will go for 1 point even if it would ensure going to the next round. Getting the 500 point bonus for highest bid will be valuable at the later stages of the game when there's less players and everyone has less points left.
Anyways, i also think that it's not a very good rule and just lenghtens the game unnecessarily.
(sakla) You can use some of the simpler HTML on your messages or, if you're a paying member, can also use the Rich Text Editor. (pauloaguia) (Bütün ipuçlarını göster)