Here are a few of my favourite paid to click sites:
Lots of ads to click on, good referral programme (5 levels). Get paid between $0.01 to $5.00 for viewing ads.
Get $10 just for signing up, plenty of ads to click on, receive $0.02 per ad clicked on. 3 level referral programme.
Simply loads and loads of ads to click on! 5 level referral programme. No minimum payout.
Open to UK and Ireland residents only. Earn between 0.25p to 1p per ad. Referral programme has 6 referral levels!! Pays out at £3.