Computer application software for mobile phones, portable media players, handheld computers and related mobile devices, namely, software that allows users to communicate with each other; computer application software for mobile phones, portable media players, handheld computers and related mobile devices, namely, software to facilitate the sale of goods and services by others via a computer network and to provide evaluative feedback and ratings of sellers' goods and services, the value and prices of sellers' goods and services, buyers' and sellers' performance, delivery, and overall trading experience in connection therewith; computer application software for mobile phones, portable media players, handheld computers and related mobile devices, namely, software that allows messaging among purchasers and service providers; computer application software for mobile phones, portable media players, handheld computers and related mobile devices, namely, software that allows users to solicit each other to perform a wide range of personal and customized services, housekeeping, cooking, and residential related services; computer software for use as an application programming interface; electric or electronic sensors for proximity detection; wireless cameras; digital cameras; video cameras; motion activated cameras; remote video monitoring system consisting of a camera and video monitor for recording and transmitting images to remote locations; downloadable computer software for use in the retrieval of data from third-party websites; downloadable computer software for use in development of applications for the retrieval and use of data from third-party websites; computer software for the collection, editing, organizing, modifying, bookmarking, transmission, storage and sharing of data and information in the fields of residential, commercial, and personal networking, employment, careers, and hiring