Review of OneOpinion
1 star: Bad

Beware! It's a CRAP!!!

Do not waste your time, they are just crap. You'd not be able to redeem your rewards, no point of contact to customer service, you can not contact them.
I've invested or better to say wasted my time to take their surveys and earn $78 but now when I'm trying to redeem from last 15 days, it just ended with "oops! an error occurred". I tried to contact them through chat, that's the only way you can try, but all invain. No one is going to take care of your problem. Be careful. There are other legitimate sites you can try.