To earn via Paid to Promote or PTC is a little bit out of date. Earn via completing task is a new trends. While you have special skill, you can earn even more by selling your service.
You may sell your skill like help website to fine tune the Search optimization. You may help to design the graphic your client need. You may help to post comment. You may help to build a blog.
Mister Goody is a platform to sell your service. You can find lots of service selling over there. To earn more, do provide creative service! That help you to earn much more, that is a way to earn real money!