Well, thought I'd give you the update even though it's not the best of news

Seems that probably what happened is when they found out they would either have to pay $100 dollars or get him neutered, they decided against taking him home.

I found out that our shelter has volunteers that check the lost pet ads every day and contact possible owners.

GRRRRRRR If you don't want to take responsibility, then why bring one into your home?