Well, in some countries you can earn much just from survey sites.. Usually who lives in the US gets the biggest number of surveys. You get paid for taking surveys, getting refferals, taking offers and so on.
There are also paid to post sites, where you are being paid to post comments and topics on forums. There you can also get refferals and earn something from their work.
There are even freelance sites where you are applying for jobs you think suits you the best, but you have to wait sometime and need luck since usually employers are looking for freelancers with big ratings, so you can't have rating if you're new, but that's not always, so you can try.
If you would want to be my refferal on some survey sites, or some sites for posting comments on forums feel free to send me a message. Good luck.