They offer adder software. Its ethical by the process in which the extra nominations are added. Mined thru their own miner. So i went ahead and sent them 0.02176573btc. Approx $200 USD. After you send them btc i received the activation code via email. What you pay for actually is the code because the aoftware is free . and can be downloaded from the site. So i go thru the instructions , do as they say, and it only goes to 99 % complete ...you need 100% to complete. Tried a hundred times ..never works ...i email support 20 times ....finally i get a response ....telling me i needed admin copy , and a fresh browzer and turn antivirus off and all these things i dont have amd doesnt say anywhere on the site. They have a refund policy. Asked for my money back. They havent answered since.