Although there's a lot of PTCs in the market I am going to list only those that I have been paid from and that surely are not scams.

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NeoBux - Click The Banner Below to Register!

NeoBux is claiming to be a next generation PTC. And it really is. Why?

• Immediate payout! You receive money to your Alertpay account a moment after placing your request!
• Suitable for beginners: renting referrals lets you buy more for 5 times less than on other PTC sites!
• You can use your balance to extend renting time | buy more referrals!
• One can buy only one referral pack per week (not more than 100 referrals).
• If one wants more, there's the referral jackpot!
• First payout limit - only $2!
• And many more features you're gonna love!

This is the best PTC I have found. I have been paid a lot of times!

Bux.gs - Click The Banner Below to Register!

Bux.gs has done pretty well for a bux site throughout the past few months and is still paying! Bux.gs is one of the few PTC’s that accepts both AlterPay and PayPal!

• Bux.gs payments are made by PayPal and AlertPay, standard members must earn at least $9.00 to cashout, premium members can cashout at $2.00.
• Bux.gs offers up a stable earning design offering standard members $0.01 per click and $0.005 per referral click. Bux.gs premium members receive $0.015 per click and $0.01 per referral click.
• Bux.gs members receive anywhere from 5-10 ads per day to click, Bux.gs premium members receive 10+ guaranteed ads per day or more to click.
• Bux.gs referrals can be purchase by referral packs for the following prices, 5 referrals $5.95, 35 referrals $27.45, 100 referrals $69.95 and 500 referrals $324.95. Standard Bux.gs member can refer up to 2000 direct referrals using their referral links.
• Bux.gs has a very active forums where staff members are active frequently. Support requests can be made via the support system, responses are made usually within 48 hours or less.
  

Clix Sense - Click The Banner Below to Register!

ClixSense has been a very honest and dependable paid to click program since 2006. The program still running strong as ever and paying out more everyday!

• ClixSense payments are sent by check every month, users must earn at least $10.00 in order to receive a check. Purchases can be made using google checkout which accepts credit cards or paypal.
• ClixSense earnings are very decent and very stable. Users are paid anywhere from $0.01 per advertisement view on up to $5.00 per advertisement view. Users earn 10% of all referral earnings and purchases.
• ClixSense standard/free members receive anywhere from 1 to 20 advertisements to click per day or more. ClixSense upgraded members receive anywhere from 20 to 200+ advertisements to click per day. Upgraded members receive far more advertisements because they have proved they have the ability to make online purchases and are more valued to advertisers.
• ClixSense does not allow purchasing or renting referrals, user can refer an unlimited amount of direct referrals. Not only do you receive money from referrals visiting links but you will also receive commissions from purchases made by your referrals.
• Upgrade only 10$ for year!!!

Wordlinx - Click The Banner Below to Register!

WordLinx is very unique paid to click site, unlike most, WordLinx is owned by an international media company. Meaning WordLinx is a real-world business, so the chances of scam or “picking up and running” is very slim. WordLinx does not use the traditional 30/60 days for payment, most payments are process within 48 hours of request. Not only can you earn money by clicking ads, WordLinx also offers paid emails.

• WordLinx sends and receives payments by PayPal. Most WordLinx payments are made within 48 hours from request.
• WordLinx has about 6 ads a day to click, if you check the site periodically you may run across more.
• WordLinx pays with clicking links and periodically send paid emails that are worth $0.01 for viewing. WordLinx offers the traditional referral link, however their referral system is a little different than the usual system. You will earn $0.05 for every active referral you refer, $1.00 per every referral that upgrades to a paid membership and 5% for every referral click and 5% for every referral visitor purchase.
  
• WordLinx referrals can be purchased at just $0.70 each at various times, these times and dates are listed on the site.
• WordLinx has 4 different types of accounts:

1. Free Accounts: Benefits from everything listed in the review.
2. Verified Accounts: Verified Accounts offer verified buyer status, verified buyer targeting, half earned credits allocation, 200 visitors added to your account yearly. Verified is just $10 per year.
3. Premiere Memberships: Premier memberships offer verified buyer status, verified buyer targeting, unique visitor targeting, visitor location targeting, half price visitor fees, half earned credits allocation fees and 500 visitors added to your account monthly. Premier memberships are just $10.00 a month.
4. Pro Memberships: Pro Memberships offer verified buyer status, verified buyer targeting, unique visitor targeting, visitor location targeting, half priced visitor fees, half price banner ads, half cashout level, half earned credits allocation fees, 2 x affiliate earnings, 2x referral earnings, 2 x referral bonuses, 2 x upgrade bonuses, 3 x bonus earnings, 1000 visitors added to your account monthly and 100 visitors per active referral.

GOOD LUCK MAKING EASY MONEY!!!