General links
http://www.michigan.gov/documents/deq/deq-wb-nps-IE-QAPP-Guidance_254154_7.pdf
Provides good and bad examples of questions
http://ciser.cornell.edu/info/polls.shtml
Provides a list of many opinion surveys

Online-surveys (Examples)
For free software to construct an online survey, see the links accompanying Chapter 12.
www.tamingthebeast.net/misc/online-surveys.htm
http://www.internetpaidsurveys.com/uk/survey1.htm
http://www.scambusters.org/onlinesurveys.html

Research Methods in Real Life 'Earn a penny for taking surveys'
www.uk.mysurvey.com
www.apennyearned.co.uk
www.ciao.co.uk