Online Earning Ways (i.e) home jobs...

For a long time I was researching about this online earning.
But took so long to identify, but hope this is not a late stage.
As far as I've researched the best ways of earning online are:
i) PPC (Pay Per Click) like => Google Adsense

ii) PTC (Pay To Click) sites'

iii) Online Survey making sites.

I think the first is the most famous,(most of them inclusive of me write blog for this :D )

The second one is the most interesting and if done with proper work would fetch a good amount of money....(will post more about this in the next blog)

Coming to the third one even i need to start to know about it.....