You have to blast your survey out to a millin different message boards. I put mine on Yelp in 20 different cities and I got 50 responses in 10 minutes.

I am a DePaul University student in Chicago and I am trying to gather data for a research project. Would you mind taking 2 minutes to complete a 10 question survey about nutrition?

http://www.surveymonkey.com/s.aspx?sm=pOsJcCfb9l7wASqWrHClbQ_3d_3d

thanks!