I want to add Facebook Connect, Twitter login to my e-commerce website. Any advice, how can I do that?
You can try facebook and twitter APIs for your e-commerce website and add the required functionality. However, there is one social login service provider which provides plugin for popular e-commerce platforms like magento, zencart, oscommerce, xcart, prestashop, and virtuemart of joomla. Here is the link (https://www.loginradius.com/) Hope this helps!!