One of the best "offer walls" in town is called "Radio Loyalty".
 
You listen to internet radio stations, every 10 minutes or so, a captcha
appears... enter the captcha code, and you earn a point. Collect points to
cash in for Bitcoin, Litecoin, Amazon. Or convert points to cash and cash out PayPal.
  
The best part is you don't have to stay on the page... you can open another tab 
to use the site and earn points other ways, or even go to
entirely different websites, then come back to check for the captcha.
   
Go sign up and start listening to earn.... click on the "RADIOLOYALTY" logo.
 
http://www.abitback.com/members/register.php?refid=4263