Change in referral program terms from lifetime to 6 months makes CPA LEAD worse referral compared to all.
CPALead is very good alternative to other PPI programs which are used for your content protection. CPALead has the similar function. You can protect your content with them very easy. Their gateway will give option to the visitor complete some offers (survey, email submit, ...) and if they complete them you get paid at least $1. This way you can make much more than some other pay per install program using similar content protection gateways.
There are all the time new offers added to program so also repeating visitors are counted and also visitors from all world so you can convert any traffic and repetitive traffic also.
Payments are sent via Paypal or Check and minimum payment is $100 which should be very easy to reach.
There are strict rules by CPALead and one of them applies for most of other affiliate programs. You must have top level domain name like www.domain.com. Without this do not bother to signup because this shows you have no experience in business and you would not be accepted by CPALead staff anyway. You can get domain for less than $9 per year...