Two years ago, photo-sharing application Instagram came onto the scene and quickly took the entire Internet by storm. Within its short existence, the service has made some major updates, been gobbled up by Facebook for $300 million in cash and 23 million shares of stock, and now has over 100 million registered users with over 5 billion photos uploaded. As Instagram celebrates another year, it’s fascinating to look back how this one application survived in its industry while other similar ones vanished. Read the full story at The Next Web.