Igougo.com

Having been recommended to me by one of the guides on dooyoo, I signed up to Igougo.com. Igougo.com is an online community created by the guide book "The Rough Guide", they pay you in miles for reviews, these miles can be cashed in to Amazon Miles or Air Miles (Lufthansa, American Air), whilst you can't buy vouchers and sell them on e-bay, you can buy something and re-sell it (Lonely Planet books are a good bet, the new ones often sell for more on e-bay than they are bought for on Amazon)

Cashout is at $25 and they pay you incredibly quickly, I have put up a significant number of pub/restaurant and place reviews and also added my travel photos on there. The amount you earn depends on the quality of the review but for a decent 350 or so word review of a pub, you often get around $1.25.

It is open to any nationality, as far as I'm aware and for those with good writing skills and old material that they haven't added to the site, it's definitely worth visiting. Combined with dooyoo, mysearchfunds and shareapic, you'll soon be earning a nice little additional income and one that could even support you if you are frugal and have little costs.