No ClixSense does not sell referrals.
Most programs that sell referrals (such as bux programs) are selling junk. As a norm, this can be a very large
amount of wasted money. No one knows if a new member will stay active, how long the member will be active,
how long the member will be alive in order to be active, if the member will enjoy the program enough to be active,
etc etc etc. Most programs that sell referrals, are selling junk sign ups. ClixSense does not do this.
It's up to each member to gain referrals by work and achievement.
There are thousands of places online to advertise for free, not to mention the places that charge for advertising.
Since you've read everything here, you have read my tips and other members posted tips also.
Try using some free advertising and/or very low cost advertising.
As an upgraded member, you'll gain much more as your 8 levels grow.