The spam on the internet is full and the good stuff is small. I checked, liked it, I invite you too - after filling in the surveys after about 4 minutes for each you will receive a specific reward of 1usd or 0.50usd.
Register by following the link below (this is an invitation to receive more frequent surveys; the language menu is at the top right) and choose where to get the reward (paypal, amazon, bitcoin, etc.).
Good luck with your participation!