I spent some time today searching for a website that would allow me and my students to upload and store photographs and share them. One that seems really easy to use is FotoTime.
This site will allow users to store and organise photographs into folders and then to share individual photos or photo collections. You can add captions to photos and tag them to loactions on a map. Photographs can be shared by emailing a link, copying html code which the site can generate and embedding it in a website or blog or by using the site generated URL. All this and more for free.