The next plan for me is to do bitshares login for magento, xcart, zencart, oscommerce...
Then I will implement payment gateway + bitshares login for joomla and wordpress.
Then I will do bitshares login with opencart (this would be without login radius plugin as they don't have one for this, unless I can convince the CEO of loginradius to create one)
After that I will do a payment gateway for shopify.com..
are there any other ones that you can think of?