Hi,

What is your exact question? I would recommend to read some publications about it to get an idea about how to design and test your study (which is very important!). 

http://dl.acm.org/citation.cfm?id=2741685

http://www.sciencedirect.com/science/article/pii/S0747563215301072

Thanks Michael for the reccomended articles. 

Hi,

if you need a starting point of how to conduct studies on MTurk i would recommend reading the following paper as guideline for behavioral research on MTurk:

http://link.springer.com/article/10.3758/s13428-011-0124-6

As guidelines for experiments:

http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1626226

http://link.springer.com/article/10.1007/s10683-011-9273-9

http://pan.oxfordjournals.org/content/20/3/351.short

Insights about the MTurk sample:

http://cdp.sagepub.com/content/23/3/184.short

Be aware, that workers on MTurk might be used to studies nowadays, which might influence your results:

http://link.springer.com/article/10.3758/s13428-013-0365-7

I have a new (longer) paper coming out in the Annual Review of Clinical Psychology on using MTurk samples to conduct research. It (unsurprisingly) has a  clinical psych focus, but we also discuss some of the issues surrounding demographics and data quality in a lot more detail than in earlier publications. Message me in early 2016 if you would like a copy of the paper. 

Thanks Tim Straub and Jesse Chandler.