Who the what, now? One is not possible, the other was exaggerated...
Not possible being my own referral, sadly ;) I mean the exchange would give me a portion of the fee for each trade a referred friend makes. And I am one who makes many micro trades, inducing many fees...sometimes large enough to make micro trades not that attractive. I had some free trade credits but those are now gone.
And I would have gained about 3 k Satoshi on a sell 1000 USD above the price that I last bought a 100 USD worth of BTC. Those 3 k are not zero... close to 1.5 % gain... rather than the full 2 % so it turns out the fee is about 25 % of the gain. Still felt more at first glance, i.e. when I wrote my obviously inaccurate statement ;)