I got one a while ago and recently got another for my partner. It works for us. Her laptop can be used as a tablet. So she sometimes uses it as a tablet stand. Having the joint of the laptop resting in the 'hook' bit. We also use bluetooth keyboard and mouses, so its nice to have the screen raised at a comfortable height.
My housemate uses a klunkier one and she rests it on the bed. But if you're working at a table/desk, use this. Save yourself from neck strain.