It just looks like another Mylot
But Payjack is something different where you earn points and later you can redeem them to cash or to any other of your interest.
How to make money through Payjack?
Posting your questions
Answering to others questions
Commenting
Adding friends
Uploading Photos
Sending or Receiving messages.
You can make points through all the different ways as mentioned above and later you need to bid for cash and if your bid is accepted you will receive the payment. You will get different points for commenting, uploading photos and etc. Pickjack pays through paypal and as specified there is no minimum payment.
You can still earn more points by referring your friends. When you refer 1 friend you will make 1 point for each of his comments and each question he posted. So, if you refer 5 such friends you will double your earnings.