Its an idea that you think, thats awesome and then you think again and think actually not so good
Depends on the range i guess I'm pretty sure me and my housemates could have a bit of a laugh with this for about 10 minutes but it would stop being a laugh when one of us burst out the bathroom and knocked the other down the stairs.
Plus how does it work through walls etc, i think its a difficult one to judge. Outside in the park or in a proper arena would be awesome, but it would mean someone would have to sit and guard your laptop whilst the chances of the men in white coats being called when your found sitting in a bush frantically searching through the leave for ammo for your plastic raygun are high
kudos to lillian thorne for the awesome sig