DEADLIFT is a nice word and MUST be capitalyzed.

So what do you guys think about rounded back DEADLIFT?

I've done a search here and I can see in some journals that there are people doing it.

According to ExRx.net, it is important to develop some strenght in the lower back through a full range of motion. Always keeping a straight back is supposed to promotes deconditioning and deterioration of the joint structures.
http://www.exrx.net/ExInfo/Dangerous...anchor14141713

I've done a quick search and I have seen on some posts elsewhere that rounding the back in any exercise can cause injuries. While I completly understand why it could do this on the Squat (this one only deserve a capital S) and on heavy conventional DEADLIFT, i'm really not sure if an exercise that'd focus on the extension of the back would be that bad.

I might add straight-leg (or slightly bent legs) rounded back deadlift to my routine soon.

But I'm thinking that I should work on the flexibility of my posterior chain before, because doing that exercise would make me go lower than I can normaly. I guess that I should start with very light weight, but still seek for progress.