Trek Pay

Trek Pay members can choose which type of ads they would like to see (through the search function), or they can click all available ads. Each ad will credit the members account with either 3 credits or 1 credit.  The more credits you get from clicking on sites (and clicking sponsored ads), and the more referrals you get for both Trek Pay and Trek Advertising the higher your ranking. Members with the highest ranking will get the largest amount of the revenue, and members can earn up to $50 per week through Trek Pay. Payments are done weekly (between Tuesday and Thursday) and once $5.50 has been accumulated, the member can request a payout via Paypal.

Matrixmails

MatrixMails is an international pay-to site. They have been online and paying out tot heir members since 2002.
As a free member, you can earn money by reading emails which pay between .01 and .12 cents each. Signing up for offers which pay between .20 (cents) and $100 each. Then there is the pay-to-click (and view) option where you can make between .05 and .06 for each page view. They will pay you to submit articles (though it will take between 1 and 4 weeks for your article to be approved) and pay you between $3 and $30 depending on the length and quality.

Bux.ee

What you get as a member:
Earn up to $0.02 (2 cents) per click.
Earn up to $0.01 (1 cents) for every ad your referrals click.
Access detailed statistics of your clicks, earnings and even of your referral's clicks and activities.
Pay and receive instantly!