I'm currently not participating in any affiliate programs but consider doing it in the future. The exchange I use (if interested, it's CEX.IO) has its affiliate program, which allows to earn 30% from inviting users or friends to the exchange. But without this program I'd recommend this platform as it's easy to navigate and a good place for both buying cryptos with cards or wires or trading. And, by the way, the company launched a separate platform named CEX.Broker, https://cexbro.com/, for margin trading or other advanced types. So, if you happen to look for some good and simple exchange, or for more trading options, I'd advise you to check CEX.IO.