This is a listing of places on the internet where you can store photos so others can view them and you can turn them into products such as books, calendars, and cards. Some charge a modest fee (such as Smugmug) whereas others are free.
Photoshelter -- "websites for serious photographers"
Smugmug -- widely used as host for websites and photo galleries
Picasa -- a Google app
Flickr -- widely used
jAlbum -- create photo albums for websites
Shutterfly -- can create custom websites
Nikon mypicturetown -- photo sharing for Nikon users
PBase -- "host and share your photos on the internet"