"Pinterest lets you organize and share all the beautiful things you find on the web. People use pinboards to plan their weddings, decorate their homes, and organize their favorite recipes." About Pinterest
Intrigued by the possibility of catalog book links being a more visual entity, easier and quicker than finding and uploading images to the IRC news blog book features, I started to explore. The idea is simple, after locating a desired image, use the 'pin it' button (easily installed) to add an existing image or video to a board designated by the users. Once there, the social element emerges and other users can 'repin' an item to their board. When using an image from a web site, it's effectively linked back to the source. Users are instructed to locate original source for pinning; "Finding the original source is always preferable to a secondary source such as Google Image Search or a blog entry" (Pinterest Etiquette).
When searching for information on Pinterest and libraries, I found the following: