Pinterest works like your own personal digital pinboard, enabling you to pin up photos and videos you find interesting and then share your discoveries with others. There's a strong social element to the site, and you can repin content from other people, add comments to pins and follow boards created by other users. You can set up your own Pinterest account for free.

Pinterest Boards

Pinterest boards are usually themed around a category, whether it's recipes or travel. You can search through Pinterest by keyword and category to discover new content. The site enables you to create multiple boards of your own, which could be used to gather wedding ideas, list the books you've read or show off your favorite quotations. Multiple users can manage the same board, and you can add pins manually as well as through the use of a built-in browser bookmarklet or extension.