Do your research before posting. 24% APR isn't an unreasonable rate, and the investor based games section writes that sites with an unreasonably high APR should go there. 24% APR in fiat investments is definitely possible without scamming, which is why it wasn't tagged as a ponzi.
Hopefully laiyskylone didn't scam too many people/a lot of Bitcoin, and that people only put what they could afford to lose in his mixer. Luckily, they didn't decide to build up trust before running away with more funds
What are you talking about ? 24% interests per year for a damn exchange ?! You can't possibly pay that from fee's you earn because there is no guarantee that
trading fee is larger than the interest you need to pay out. But please, do show me an example of another exchange with such high interest
Though I pretty much agree with you (24% is too good to be true), but strictly speaking almost all major exchanges out there (if not all) are earning money in a lot of other ways beside just collecting trading fees...
For example, they may earn good interest on lending money to marginal traders