If you've been paying any attention, you know that Cardano has shifted to Shelly. People are already building businesses around Cardano's staking functionality and CardanoPool.XYZ is the latest.
If you are holding Cardano and want to earn interest and don't have the technical expertise to setup your own wallet to stake; you might want to consider a pool like this. Read their Press Release
Also follow them on Twitter @CardanoPoolXYZ - do your own due diligence and hopefully you will benefit from it.