i play my game against the players that are still the same, and i tighten up against the newbies.. preferrably until i've seen a couple of showdowns between them and another player. I hate confrontations against players i dont know, so now i watch for quite a while before even sitting at a table, or atleast sit out for a round. If more than half the table re-news itself i sit out until i've got more of a read.