Create social register/login add-on for Magento

ONLY BID ON THIS PROJECT IF YOU ARE LOCATED IN HO CHI MINH CITY, VIETNAM. We want to work closely with all our freelancers and therefore want them to be located in the same city as we are. We are seeking someone that can help us develop an add-on for Magento, for registering new customer account/logging in, through Facebook Connect, Google and Twitter. The add-on should consist of the following parts: Front-end: * In the “Login or Create an Account” window, the icons for registering or logging in through the social media services, should be shown. Back-end settings for add-on: * Possibility for turning add-on on/off * For each social media service, it should be possible to turn the usage on/off, enter the necessary application ID/application key/secret key, etc. * Possibility of selecting what social media icons to use. We will provide various sets of icons, the user should be able to choose one of these in back-end. Other requirements: * When a new user is registered through a social media service, the default Magento confirmation email should still be send to the user. * You must develop the add-on from scratch. Do not use existing add-ons or code that is not 100% royalty free and open source. We do not accept copyright infringements or breach of third party’s Intellectual Property Rights. The add-on must be compatible with Magento 1.4, 1.5, 1.6 and 1.7