Help finding missing pet...

[DRFTKO]

One of my dogs got missing earlier today and I have spent most of the day looking around the area for her. What I need help on is some free or cheap (I'm a broke college student right now) resources to help me find and bring her home. I have already posted a 'lost' add on Craigslist, but I wanted to see if anyone here would know of another source that I could use that would fit my needs. I plan to call around to the local animal shelters and veterinarians tomorrow and see if she has been turned in to any of those places. Any fast help would be appreciated.