if i want someone to do the verifiction, i send them a textcoin with at least 8$ worth of bytes and once he verified i get 20$?
Correct, but he must use the bytes you sent him to pay for the verification. Of course new users have no bytes so you will always get the $20.
It's actually an amazing opportunity to refer people. If you can figure out a way to scale to thousands of referrals, you'll be rich in no time.
Which is why I say the referral program is good, we just need to wait for it to take off.