YouTube is a good example of where members load and share their files in a "cloud".
Videos are another great tool to give your site / blog exposure. Add appropriate tags to your video so viewers can find it in a search. Edit your publish time to aid in up-load related search. Here is an example of the free movie editor. There is several types. Quickly build a mini-movie to show case your products or entertainment.
Screen Capture Application. Edit online images.
(Click image for link)