I want to make a few things clear regarding the previous answers...
I have worked a large number of rentals across the city on both the listing and the tenant side and at the risk of being a little rude, I feel confident that my previous answer and current clarification of it are extremely accurate. I am not anticipating getting your business, just answering a question as that's the beauty of this website. If you like my answers and consider interviewing me for the job of listing your house for rent, great...
If you want to talk about MY specific fees or rates, I am happy to do so with you directly.
A TYPICAL commission to LIST a home for rent is one month's rent. As stated in my initial post, the tenant makes an application which includes a credit report, reviewing employment/income verification as well as rental/ownership history. If you approve the application, a lease is drawn up and agreed to by both parties. Once it is agreed upon, the tenant signs it and remits a security deposit TYPICALLY one month's rent payable to the owner in certified funds - a pet deposit is usually made at this time as well.
The first month's rent is TYPICALLY made out to the broker as payment for services and a predetermined portion (it's in the rental listing agreement) is paid to the co-op agent who brings a tenant.
One cannot scan the listing service to determine what LISTING fees are - only the co-op fee that is being offered to an agent bringing a tenant.
As with ANY real estate transaction, our fee is negotiable. If I were in a really good mood, I could charge you $0 to list and pay out of pocket to a leasing agent - yes, that's the proper term for the tenants' agent.
If have questions about my diligence or knowledge of the Atlanta market, please feel free to read through any of my previous Trulia posts by clicking on my profile. I have been a member since Fall of 2007 and I think my answers will show you the quality of my work and why I actually earn my fees and commissions.
It's been proven time and again that using an agent that knows what they are talking about gets you results and just putting a sign in the yard and an ad in the paper doesn't cut it anymore. Beware too of the safety risks of putting your property on craigslist or other sites and opening your home to people who find you online and want to meet you at the property.
I generally don't repost on my own answers since I try to answer them in full the first time, but I thought it important to clarify and reiterate a few of these points. Ultimately, it is of course your choice of how to handle the transaction and I wish you the best of luck!