I wrote a PHP Movie Survey App for which I would like to use Amazon Mechanical Turk in order to collect my dataset (users preferences on movies). 

I found Amazon MT is only available for US residents, so I searched for similar services in Europ like Crowdflower, Scalableworkforce, Crowdguru.de and many more. 

However, I am not sure if any of them let me put the survey link with the minimum limitations for the tasks..

I do appreciate if someone has the background or experience on any similar services.

Thanks in advance,

Mona