Waiiit a min...youre saying by saving my SDC they could potentially DECREASE in value over time?
No, you will just get more SDC over time for your staked coins. Instead of miners minting new coins, they are minted through the staking process. So say for example if you have 1000 SDC and you stake them in your wallet for 1 year. Well as I understand by the end of the year you will have about 1020 coins from the staking process, receiving about 2% per year.
what happens when the coins run out? how does staking work? Also when will SDC dry up
I think that the coins never run out, and the staking just continues at 2% per year forever, if I understand correctly. The 2% is a reward for helping to secure the network. When you stake your coins you help the network. Its true that the inflation will be 2%, which may seem bad to have constant inflation. But this is kind of different than other inflation that we are used to, because you yourself can stake your coins and receive the 2% as well. So you are not really losing anything to inflation as long as you stake your coins.
What will SDC be used for exactly ? What is the most effective way of getting 100% anon shadowcash from the BTC sitting in my Coinbase wallet.
It can be used for anything. Soon they will have a decentralized marketplace in the wallet finished called ShadyBay where you will be able to buy or sell anything with complete privacy. If you want completely anonymous coins, just be wise with how you send them around. You would probably want to send your coins from coinbase to an exchange, then purchase the SDC. Then send it from the exchange to your own SDC address. Once in your own SDC address, you will want to send the coins from SDC to Shadow using that option in your wallet. SDC is the transparent side of the coin and can be tracked on the blockchain. But once you convert to Shadow you are basically anonymous. You may not want to send all the coins to Shadow at once, just send a portion at a time. You can keep them there or you can turn them back into SDC by sending to a SDC stealth address. The new SDC will be unlinkable to your original SDC. You will see the options in the wallet. You can send from SDC to SDC, or from SDC to Shadow, or from Shadow to Shadow, or from Shadow back to SDC. When creating an address to make a stealth address just click new address, then click the box that says "stealth address", then click ok.
When ShadyBay launches how will people be able to send stuff to each other and guarantee the other party will receive the goods and the other the payment? How does this type of thing work? What if someone sends something to a client and doesn't get paid ...or a buyer Pays and doesn't get anything? Also how is this different from things like the evolution marketplace on tor or agora? What will make users from those marketplaces want to use Shadowcash?
My final question is in regards to the wallet. When I hit receive payments it shows my address and my shadow public key...what is the difference ? can I send SDC to either address ?
Good questions. I am not sure exactly how the devs are preparing to solve these problems, and I am interested in the answers as well. I know Open Bazaar had some interesting solutions to this. I heard something before about how some people would act as escrow agents. A buyer and seller could if they wish, select an escrow from the free market based on their feedback. Then if there were a problem with the transaction the escrow agent would decide who gets the money. I think the main difference between markets like evolution and agora are those markets are centralized. This means they are located and held on a single server somewhere, or bounced around on different servers. They are also run and maintained by centralized individuals. This gives governments and hackers a central point to attack and cause failure. However with a decentralized marketplace like ShadyBay, it is much more resilient and resistant to attack. ShadyBay will not be run by 1 or a few people, it will be run by all of the nodes on the network. If the network grows large enough, it can be essentially impossible for any adversary to shut it down.
Also fees might be lower in a decentralized marketplace. Also there may be less of a risk of the owners of the marketplace taking the money and running or getting hacked and losing all coins like with centralized markets. With a centralized marketplace you have one entity holding all the coins and acting as escrow, which is a giant target for thieves and hackers. With a decentralized market the coins are spread out among different users, so there can never be one large hack or theft where everything gets stolen.
I'm also curious as to why the public key is shown in the wallet as well. The address is derived from this public key. I'm not sure if you can send to a public key, but probably you need to send to an address with the correct format instead. Bitcoin works the same way, but usually you only see the public address, and not the actual public key.