While playing New Vegas recently, I noticed something interesting. This was almost certainly present in Fo3 but I didn't see it during a quick search. What I noticed is that shops which have inventory sitting on the counter are incredibly easy to rob. Because no one minds if you "move" the guns without adding them to your inventory, you just need to drag them into some seclude corner or bathroom, sneak, and pick them up from there. I just got about 10000 caps worth of energy weapons doing this. Seems like they should have noticed this, no? Apologies to everyone who already knew this-- it is a stupid thing that I only just realized.