PTC - Paid To Click 
Here is a list of PTC sites where you can earn some money. There is no need of high skills just you should known how to browse the net. 

Clixsense.com
Neobux.com
Cashnhits.com
Buxvertise.com
PaidVerts.com
DigAdz.com
Warofclicks.com
LogiPTC.com
Buxp.org
Twickerz.com
Innocurrent.com
Ayuwage.com
Legacyclix.com
Scarlet-Clicks.info
Gptplanet.com
You-cubez.com
Wordlinx.com
Linkgrand.com
Clickfair.com
Clicks-fx.com
Cashons.com
Cashtream.com
Jillsclickcorner.com
Velvetclix.com
Cash-Harvest.com

Take a look also to http://bitcoin-faucet.net/paidverts-earn-money.html