I don't think anybody can make that much but I heard about people joined early that are making $500-$1000 a month.
I joined about one month ago and already have more than 800 referrals and I am making about $1 per day worth of bitcoin.
Here it is a screenshot of my account:
Here it is my referrals page:
And here it is the payment proof:
Also looking at the payments amounts they send daily on Blockchain we see that they paid 0.35 BTC on 3 September, a few days ago.
Which is about $ 2,500. So Cyptotab is sending daily $2,500 to their users or $75,000 a month.
So basically it is unrealistic for any of their users to be making thousands of dollars, let alone $50,000 which is near the overall amount of money sent out from Cryptotab monthly.
The full Cryptotab review can be found here:
Cryptotab –Mine Free Bitcoins from your CPU Mining!