I’d make friends with realtors.  They have an advanced heads up on who’s going to be moving.  I’d do some personal outreach and have a nice brochure for them to hand out.  I know that sounds old school but unless you’re going for people who are moving cross country, I think you’d see better results.  If you really hit it off with someone, they might even let you sit in on some open houses with them.   (more)