This document discusses ways of sharing and annotating images online. It begins by highlighting image resources from the British Library, including images from Codex Sinaiticus and maps. It then lists social media platforms like Wikimedia Commons, Pinterest, and Flickr that can be used to share images. Next, it provides examples of services like Flickr, Tumblr, and Dropbox that allow storing and sharing personal images. Finally, it outlines projects and platforms that facilitate advanced research through image annotation and transcription, such as Saphari, IIIF, and transcription initiatives at the National Gallery and University College London.