Catherine Dolan from the Facebook Psoriasis Group suggests to fill in a form.  This form describes a research study that Samuel Kunjukunju from the University of Rochester is conducting.

Sam Kunjukunju, is researching into psoriasis (particularly the treatment of) and would like our help! The purpose of this research study is to look at how Psoriasis patients are managing their condition in order to further Psoriasis research.
http://www.surveymonkey.com/s.aspx?sm=cAZwnVTvKQ6UNoHZhE%2fC9A%3d%3d#q1

This study involves a survey of 32 questions. We estimate that approximately 500 individuals will take part in this study. You will be asked to complete questions about how you have treated your Psoriasis and your experience in managing your condition. This should take about 15 minutes. There is a small chance that some of the questions may make you feel uncomfortable. You don’t have to answer those questions if you don’t want to. In fact you don’t have to answer any question that you choose not to answer (except the initial eligibility questions). Just skip that question and go on to the next one.

Your participation in this survey is completely voluntary. You are free not to participate or to withdraw at any time, for whatever reason without penalty or loss of benefit to which you are otherwise entitled.
All answers are confidential and you will not be required to enter any contact information/information that will identify you individually. It took me under 10 minutes to complete so please if you have a spare few minutes do take part.