Isabel Marco's Moneymaker is a fairly new PTC site. It is very similar to most of the other sites except that it looks rather more colourful. A friend asked me to sign up and reported that the admin were great. As with other sites, you can upgrade your membership on a monthly or yearly basis and you can buy referrals. I had 17 clicks to do and I had to view them for 40 seconds, the payment is 1 cent per click and you can cashout when you reach $9.