The application that we'll be building together is based on one of the online services I've launched called Vizcaro. Vizcaro is a photo sharing service, but instead of sharing individual photos, you share albums (groups of photos). Also, the photos and albums will be annotated so you can add titles and captions to them. Our version won't have all the bells and whistles that my online service offers, but it will have just enough parts to make it a great web application to build in order to learn the material in this book.