If you own ADA tokens, that makes you a Cardano stakeholder. As a stakeholder you can either -well- do nothing, or you can choose to play an active role in the protocol by keeping your Daedalus wallet online.
Free staking rewards
By leaving your computer and Daedalus wallet switched on and online, your computer will help process transactions on the Cardano network. And here comes the good part: in doing so you can obtain free additional tokens as a reward!
Let us do the work
Leaving your computer switched on and connected to the Internet at all times is, however, far from ideal. Fortunately, the Daedalus wallet will soon be able to let you delegate your stake to a stake pool such as staking4ada.org. Staking4ada.org can stake your ADA tokens on your behalf, so you accumulate free ADA while keeping your wallet closed and your computer switched off.
100% Secure, passive income
By delegating your ADA-stake to staking4ada.org inside your Daedalus wallet, you are sure to receive free ADA tokens on a regular basis, in total security and without any additional effort.