On-line surveys

There are number of agencies offering tools for on-line surveys (with tutorials) some with scaled down freebie versions:

www.kupferman.com has some interesting stuff on a wide range of research topics, including reviews (2006) of a wide range of on-line software :  worth a quick browse.

Smart Survey
Survey Monkey  
QuestionPro:
Online Research Made Easy
SuperSurvey
Demographix
eSurveysPro 
edigitalresearch  (Also has some interesting interactive question displays: try their Green
questionnaire)
Survey Software: Ask, Analyze, Improve
Survey Creation, Deployment, & Analysis Tools for Businesses

A Google search on Response rates for online surveys  throws up some useful tips:

Jennifer M. Jensen (Assistant  Professor, Department of Political Science, Rockefeller College of  Public Affairs and Policy, SUNY Albany)
Ten Easy Ways to Increase Response Rates For Your Online Survey

Kim Sheehan (School of Journalism and Communication, University of Oregon, 2001)
E-mail  Survey Response Rates: A Review