In other parts of the country, sometimes the fee is split. Or sometimes the renter is responsible for the commission.
Get yourself an agent, and ask that agent who typically pays where you are.
Hope that helps.
Trulia only collects data and posts homes that are listed BY agents.
In order to buy or rent a home, you'd have to reach out either to the listing agent or to an agent in your area.
Some agents pay to have ads appear next to listings...even if they are not the listing agent (listing agent is the agent who is handling the home and marketing it)
In regard to the commission, once you speak with an agent, they can explain what the fee and upfront costs may be.