9 Computer e-commerce software to allow users to conduct electronic business transactions in online marketplaces via a global computer network; computer database software for use in conducting buy-back, trade-in and sales transactions for electronic goods such as computers, cell phones, laptops; computer software and software development tools for use in developing further software and software applications in the field of e-commerce; computer software to enable uploading, downloading, accessing, posting, displaying, editing, tagging, blogging, streaming, linking, sharing information about electronic goods, such as computers, cell phones and laptops that are available for buy-back, trade-in and sale, via computer and communication networks; software for sending and receiving electronic messages, graphics, images, audio and audio visual content about electronic goods, such as computers, cell phones and laptops that are available for buy-back, trade-in and sale, via computer and communication networks; computer software for the collection, editing, organizing, modifying, transmission, storage and sharing of data and information about electronic goods, such as computers, cell phones and laptops that are available for buy-back, trade-in and sale, via computer and communication networks; computer search engine software; computer software for accessing, browsing and searching online databases; computer software for personal information management, and data synchronization software; downloadable application software for use in database management featuring information about buy-back and trade-in and sale services for electronic goods such as computers, cell phones, laptops, information on cars acquired by each of the dealerships, and information about a buy-back and trade-in and sale services for electronic goods such as computers, cell phones, laptops; computer software which lets a user conduct on-line, web-based auction and marketplace services which connects buyers and sellers of new and used electronic goods such as computers, cell phones