pogre said:
Exactly what I use - didn't Tweet suggest this in a column at one point?
I don't remember where I got it from, but it might very well be from Tweet. I would have guessed it was from Unearthed Arcana, but it seems it is not.
We tried the UA method, with Fort saves, but didn't like it. Sometimes it took forever for a staggered character to drop due to having a good fort save. We also felt it was a little unfair; a character of a fighting class usually has a good Con and a good Fort save, so they never fail, while the poor rogue lives in constant fear! Con is important enough as it is.
The main reason we tried it was because we were a little tired of other PCs not hurrying to their fallen comrades, as they knew they were just barely below zero, and so they had perhaps six rounds before anything had to be done.... :\
Nowadays we are happy with the following; characters die at (10 + lvl) negative hp, bleed 1d3-1 hp/round unless they roll under 10%.
And noone is allowed to tell the others how much damage they have suffered (other than in general terms), nor how much they bled, nor if they've stopped bleeding, until another PC has looked them over (given first aid, healad, etc).
We feel this is a good balance between survivability and excitement!