You can share files anywhere online, but sharing information poses a greater problem when dealing with groups. Padlet creates "walls" you can fill up with messages, images, files and links to share with others so you can collaborate in real time.
When you create a wall, you can decide how public or private it is, and who can share on it. You can simply post text-based messages or add images. By default, walls are free-form and you can place messages anywhere. If you prefer, however, you can show a stream of posted messages that display in chronological order instead.
While there are a lot of collaborative file-sharing and bulletin board-style systems on the web, Padlet offers plenty of customisability and privacy options. If you're looking for a good way to communicate and share online with a specific group of people, or even a very broad one, Padlet offers a solid solution.