Its not a VCC service . Its like paypal/Amazon Payments but visa own service . You enter your real visa CC details and they pay using it wherever supported . Its started by VISA to counter paypal specifically . Buydig has always a discount running of $20 on $100/150 when paid by visa.me . Newegg also accepts it but disables it when they feel so . Also accepted by erstwhile buy.com now rakutan something . Its fully safe but you can log in only using a US IP . It will not allow to login with Indian IP while paying for on newegg or any other US site .
Use this http://www.vpnbook.com/freevpn to register and manage your account .
EDIT its https://www.v.me/ and not visa.me