How deposited funds are being kept on your platform [I'm referring to its safety]?
Hello, what we actually meant with that is that "purchasers", when completing tasks in Amazon mechanical turk, for example, receive their payment from Amazon in the form of amazon gift card/balance, and then they can exchange that amazon balance for cryptocurrencies in our platform buying items for "customers". But we will adjust the phrasing to make it more clear, thanks for your interest & observation.
Regarding your second question, we manage our own full nodes, and funds are kept in a combination of online and offline storage, you can read more about that in our Terms of Service (point 15).