How to Source (Uncredited) Images, Part 1: Image Sharing Etiquette

I discovered I have a new super power: sourcing an uncredited (food) image in under 10 minutes. Boring, you say? Given the number of unsourced images–particularly food and comics– on tumblr, Facebook, and Pinterest combined with the seeming inability of users to 1. check for a source before sharing/reblogging and 2. not share uncredited images…