This affects you in two major ways as an affiliate. First, it is very likely that the leads you delivered will be reversed. This means that you will not be paid for leads for which you've already paid the freelancer/lead service company. Second, you run the risk of having your affiliate account terminated for fraudulent activity, ending up in loss of all your affiliate earnings.
Like most things in life, if it seems too good to be true, it usually is. While it may seem like these people are offering you a great deal, the reality is that if they had the ability to generate quality leads, they'd be working with the networks directly and would not need to sell leads through customers like you. These freelancer/lead service companies are doing nothing more than passing on the risk of delivering bad leads to you.
If you are currently working with a freelancer/lead service to get leads through your affiliate accounts, I'd suggest you stop immediately as you will wind up suffering for it at some point in the future.
Here's some name/contact info for 3 people who have recently victimized a large number of MaxBounty affiliates. If you are working with them, I'd suggest you stop immediately and chargeback/stop/dispute any payment you've made them:
IM HANDLE NAME
vertexbd01 Don't have a name
Ayjamsol Jahangir Afzal
Ayjamtech Ali Raza Afsal
Feel free to pass this info on to any of your colleagues who are not members of Warrior Forum or to repost as you see fit.