I have a local radio show here in the NorthBay and find this a wealth of great leads. I broadcast on a local station with a "talk" format. I'm the only one in the NorthBay doing a show and I use it in all my listing presentations and do 6-10 deals a year from it. It is paid by sponsors and Keller Williams with me paying a very small amount. If you've got the urge check out your local market.
I also belong to a local "Tips Club" which is amazing!! I met a great client who is a profesional Fiduciary and manages estates as a trustee. We did 8 deals this year alone. Just from him!! There is "LeTip" and BNI which are national franchies. But you can start your own. Walter Sanford used to have his "Diamond Club" information which I constantly give to agents to use for starting your own club. Just the calling of the businesses will get you leads!! Good luck!
Most of my leads come through open houses and referrals.
Also all nosy neighbors. They do like to have their opinions heard and like to feel important when giving you the history of the whole street. I like to invite them an hour before the open house so I can get them out of the way for potential buyers. Afterwards a nice thank you card and a phone call, you never know if they have a relative or a friend that wants to move.
Other than that expired and extended properties, with mixed results. Some people are just testing the market.