Last night I got smart and put an html IMG tag in my Craigslist ad for the house. Now anytime anyone views the ad, they pull a 35-byte GIF image from my webserver. I can then track how effective the ad is.
After setting up my tracking at 9:30 last night, five people clicked on the Craigslist ad. Out of those, two of them went on to view the home at the GreatRaleighHome.Com website. A forty-percent clickthrough rate is awesome!