Advcash is avvirtual card system of payment that allows you to make and recieve payment
It even allows
During registration,which is 100% free ,the privacy policy reminds us that our data isvabsolutely secure with thwm.
Though yiu can use them to trade bitcoins. It was registered in 2014.
I even discovered that users could transfer funds to one another
To earn passuvely you can refer new people which is optional.
To top up your balance, you can use crypto currencies or even use your bank account.
Since it is online it is susceptible to external aggravation like fraud or hacking
So improvement will just be the thing