I am installing some of these outlets (link to lowes.com or link to amazon.com) which claim to have automatic grounding.
It looks to me like the grounding is provided solely by that little strip of copper wire at the "bottom" screw.
Is this a safe, sane thing people actually do? I am using metal boxes with romex, with the ground wire from the romex connected directly to the metal box.
It would be helpful to me if I can rely on this automatic grounding because I am installing 2-gang boxes, each with two outlets, and many of them have an outgoing line to feed another downstream box (e.g. if you manually ground the outlets, I have to connect the incoming ground + outgoing ground + metal box + 2 outlets, it gets to be troublesome to securely connect them all and fit everything in the box).