It's like star craft players constantly clicking their mouse when they're not actually doing anything.. It's keeping your actions per minute up, keeping you warm and ready for action for any point in the mix. Lately when I play out, since I don't have much practice under my belt not having any gear of my own I just aim for smooth mixing, track to track, not much effects/EQ'ing. If I've got shit beatmatched, it's time to give the floor some energy by getting em moving the way I move to it! With the mid tempo weird stuff I'm into, beatmatching takes a while.