Find a cpa network that allows incent traffic then just pay people to complete the offers. You can also run this method on autopilot by starting your own GPT (Get Paid To) site. People sign up, complete offers and automatically get credit. You as the webmaster decides if they get cash or some other value.
Check out shiftcode to set up your own gpt site: http://shiftcode.com/
And here is a list of CPA networks that have incent offers. Of course talk with your affiliate manager before you execute your plan for their blessing:
http://www.affpaying.com/?s=Incentive
If you search Fiverr you can even find people there who are willing to complete your CPA offer:
http://fiverr.com/juliajonesh/complete-one-cpa-offer-or-any-survey-with-my-personal-information
http://fiverr.com/rapid1/complete-your-free-cpa-offer-survey
http://fiverr.com/cpafriends/fill-out-7-of-your-one-page-cpa-offers-that-convert-on-one-page-completion
I have found people on microworkers and also on freelancer.com that are willing to do it, but I haven't had any luck on those sites.
I hope I was able to add some value to your inquiry