Abstract: A social media system provides for the collecting, discovering, and/or sharing of media objects among users. A user can collect an image, video clip, audio clip, text, graphics, and the like while browsing an internet resource or another suitable source. The collected media object can be used to discover other media objects that are relevant and/or similar to the collected media object. Relevance and/or similarity may be determined by one or more mechanisms for image classification. Collected images can be saved individually, or grouped together, e.g., as an album, for later retrieval. Collected images can also be shared with other users. The sharing may be based on a dynamic social graph with ad hoc nodes.