Flickr - image and video hosting website
Snaptivity - Real-time photo sharing with the world nearby
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Flashgap - Time-delayed photo-sharing app of last night's embarrassment
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.
WiFi Map - A crowdsourced list of routers and passwords