Mining Pools are similar to Lottery Pools in that multiple people put their winning numbers together and share the profits proportionately when they win.
Once you have mined SiaCoin, you may want to exchange some for cash to buy more hardware or pay bills.
Sia is the future of decentralized Internet storage
There is no central point of failure so your memories will never be forgotten. If your traditional web host shuts down or crashes, you may lose it all, but Sia distributes your files to many decentralized hosts so it will be safer than ever before.