I already loved my neighborhood, but my faith in the terms "neighbor" and "neighborhood" were greatly reinforced tonight.
2 hours after posting lost signs (.. And yes, knocking on a few doors and asking neighbors) I received a call from two guys who lived down my street. They called from in front of my house (where one sign was posted), so I could hear them talking through my window before my phone rang. I burst out the door immediately. They seemed as excited as I was saying they were planning to post in the "found" section on CL tonight because as the said, "when we found these, we knew someone somewhere was having a really bad day".
For me, it wasn't just the cards. It was that it came immediately on the heels of receiving some pretty serious/bad news, which is one of the reasons my mind was elsewhere when I put them down. Losing them just seemed insult to injury... However losing them and having them returned is far better than had I not lost them at all!