For now its targeting the offline commerce. Imagine using the tool at the flea market. For the online commerce, I am designing the Paypal like API so that anyone can integrate it on their own web site. Will take some time. Until then you can create an invoice and use the link or the QR code captured from it and embed it into your website.
RE: Steem Pay Update - Creating the First REAL ECONOMY on Steem Blockchain!