Stock photography for marketeers
Anyone wanting to bring their message across will find images to be invaluable.
Stock agencies, while not a new phenomenon, can meet the wishes of marketeers, graphical designers, product managers and others by offering a wide range of photos which can easily be searched with keywords.
Relatively new is the emergency of low cost stock agencies. While not totally free, they offer an inexpensive alternative to the big names in stock photography. They are affordable yet can deliver high quality.
An example (tip: use the search buttons to get real search results):

