@juul currently there is no "amplification" effect currently. It's not used to rank or bubble up anywhere. All that happens is some ticks are shown at the top of the message and if you hover over the ticks, who hit dug is shown. Also, the author of the message gets a notification, and even then, "notifications" are not very in your face. In all, it's a pretty subdued system currently. But I think I like that.