They used to be good service for Bitcoin payments when merchants wanted accept bitcoin payments but not take Bitcoin to their posession. Now they are lagging behind technology and instead of upgrading, now they are putting costs on customers. They take some verry strange network fee (absurdly high), and not support SegWit. They take payments to adresses like 1K2F2SXb**** (legacy address format). They also reuse adresses (LOL).