all these three bad beats happened because i slow played.  I think slow playing can only help if the right cards come out.  The best way to avoid being busted by a bad beat is by betting the hand that you have.   Don't let your opponent catch the 1 or 2 outter they need to bust you.  This is what i've learned from my experiences and it seems to have helped.  i hope it helps you too.  I knwo that this means you may not win as much chips because you may scare your opponent away, but at least you wont get sucked out on and get busted