Downloadable computer software for modifying and enabling transmission of images, audio-visual and video content; Downloadable computer software for viewing and interacting with a feed of images, audio-visual and video content and associated text and data; Downloadable computer software for finding content and content publishers, and for subscribing to content; Computer software for tagging images, audio-visual and video content with data indicating date, location, people and subject matter; Computer search engine software; Computer software for social networking; Computer software for creating, managing, and interacting with an online community; Computer software for managing social networking content, interacting with a virtual community, and transmission of images, audio-visual and video content, photographs, videos, data, text, messages, comments, advertisements, media advertising communications and information; Computer software for creating, editing, uploading, downloading, accessing, viewing, posting, displaying, tagging, blogging, streaming, linking, annotating, indicating sentiment about, commenting on, embedding, transmitting, sharing, searching, or otherwise providing or interacting with electronic media; Computer software for sending electronic message alerts, notifications and reminders; Software for sending and receiving electronic messages; Computer software for disseminating advertising for others; Computer software for use as an application programming interface (API); Computer software in the nature of application programming interfaces (APIs) which facilitate online services for social networking, developing software applications, and purchasing and disseminating advertising