Wow, I never knew there were that many drop-offs either My snow corn was a rescue, but not from a pet store. During my 6 months working at petsmart we never had anything like that, and I never heard about anything ever happening in the past either. I guess we would have people actually come into the store with the animals and ask if we would take them, and we always had to say "no", but then the pet care manager would go around and ask the employees if anyone wanted to take them. I guess one girl ended up with 2 corn snakes and 3 bearded dragons that way. But drop-offs... as in people just abandoning the animals outside the door over night? Nope, never. That's so sad.

Good luck to you! I agree with van_garret that you should make sure you don't get in over your head, but I think it's great that you're doing something like this!