Inboxdollars.com is an international site which gives money for completing surveys, playing games etc. The user interface and design of this site is very good and easy to use.
People outside US can only earn by search, sweeps and playing games. There are lots of surveys which has a very good payout.
There is a category called PaidMails in which you have to complete short surveys and they get approved instantly.
After using this site for about 2 weeks I have earned $19 just by completing offers and surveys. I would definitely recommend this site as it is very easy to use and pays well!