I had 4 accounts with over 45,000 rented referrals across the 4 accounts that took me 3 years to accumulate at a cost of approximately $18,000 out of pocket between 2011 to 2016. I had a decent amount of monthly income of about $1,500 to $1,800 which I was able to cash out to paypal every so often.
From 2016 to 2019, they slowly killed my accounts. The rented referral averages dropped from. 70's to <. 50 which meant that I couldn't renew the referrals since they were making a loss. In each account, I sent questions or posted on the forum. Not complaining, just asking what I could do to improve the averages. Upon the first question/post I sent to the support staff, the account was immediately banned from the forum and I had little recourse. Just had to let the account die since I wasn't about to put more money in.
Thankfully, by that point I had returned all my original investment and cashed out about $25,000 in profit before they caught on or decided to globally kill accounts by lowering averages of the rented referrals.
It was nice while it lasted but most likely works a lot like a ponzi scheme. If you got in at Neobux early enough (around 2008-09) and built up big account(s), you made out like a bandit albeit at the expense of other newer members investing their money.
I would highly recommend staying away from this site based on their business practices. Like most other ponzi's there is a tipping point where they can't pay back what they owe because no new money is coming into the system. Shutdowns at Payza and Paypal helped accelerate this I suspect.