Some online sites when both players are all in before the river will flip over both players cards and some wait until the board is dealt.

Which do you prefer?

Normally, during cash games, you can keep your hand hidden until showdown and then muck if you lose. In tourneys, they show when the money goes in. I enjoy doing it like that.

What site doesn't do it that way?

I know for a fact that pacific doesn't do that... Hate that about them. You never know what the guy you knocked out had.. But then again, at least you knocked him out, so who cares! But seriously I do think that all sites should do that. That's how its supposed to be done.

Yeah Pacific for sure and if I remember correctly pokerroom as well.