Ist surveysok.com sicher?

I register my self,they never send me money(when i reach the 500$ limit) ,i try to contact them and they never answer me back. I believe its a phishing side fore the ***** (because they start to send me emails after i register to surveysok) that is also have a bad ratting. So i think those people they try to gather email addresses and to have us many people register and after some time to shell the side maybe. Stay away its a Scam and a waist of time. And were is the catch? ***** receives about 5,615 unique visitors and 33,130 (5.90 per visitor) page views per day which should earn about $18.70/day from advertising revenue. Estimated site value is $6,836.88. According to Alexa Traffic Rank surveysok.com is ranked number 78,067 in the world and 0.00175% of global Internet users visit it. This site has Google page rank of 0. Site is hosted in Ukraine.So stay away you make them take money just from population of there side.