Zillow for Marketing a Rental

Hello All,

I am knew to being a landlord and have not gotten very many bites on a home I put on the market about 6 days ago. Right now, I am listed on Craigslist and have a "For Rent" sign in the front yard.  I got few calls and did two showings the first two days. Unfortunately, the first family didn't qualify and the second family just notified me that they needed something larger. After receiving this initial interest, the calls have since dried up, and I am considering Zillow as my next marketing avenue. Have any of you used Zillow, and can you tell me whether you think this is a good place to find potential tenants?

Thank you in advance for your tips and advice.