How to disappoint your former neighbors:
Call them to ask if they ever found their lost kitty.
When they say no, tell them you have a little girl kitty in your garage, and it *might* match the description of theirs.
Have them come over, only to find out it's not theirs.
So now we have disappointed former neighbors, and someone's little kitty in our garage. She's a very pretty and very friendly kitty, too...I'll scour the neighborhood in the morning for lost kitty signs, but if I don't find any, I suppose I'll take her to the SPCA. A third kitty would be fun, but Max would eat her for breakfast first chance he got.