Thanks to give good suggestion
This is already my plane in future as I'm about to complete my studies
Actually on these sites you cannot earn so much by your own clicks only. You should have some active referrals and you get commission of their earning.
But you can still earn some money that can easily cover your DSL expenses.
And I have about 7 to 10 referrals on each site. I spend only about 1 hour to surf these sites by using DSL.
If I was a programmer then this PTC industry would be money tree for me, because your own ptc site is very good money generating site where you can get at least 5000 visitors a day easily