Swagbucks.com is a good site for earning gift vouchers for Amazon, etc.
The daily poll is a good way of earning Swag Points.
Also, the surveys are good for earning swag points too.
Also, the points can be redeemed for Paypal wire transfers.
I have used Swagbucks for a very small period of time and I am quite satisfied with the website.
Although I do not have plans of returning to use it, I would recommend it to those who would like to earn small rewards for online activities.:)