Image descriptions may be your most important search engine item "to entice a pottential buyer to click on your link" when they are searching for information and/or a product (image).
Examples:
1. "Mt. McKinley photograph by Robert M. Braley Jr." (this is likley to short a description as they have seen many Mt. McKinley photographs and they do not have a clue who Robert M. Braley Jr. is).
2. "Mt. McKinley Alpenglow fine art sunrise photograph taken from Talkeetna, Alaska during winter by Robert M. Braley Jr., a photographer of Alaska Storyteller Photography." (Say the potential buyer is a travel agency looking for a winter photograph of Mt. McKinley to display on the agency wall for travelers looking to book a trip to Talkeetna, Alaska during the winter to see what they are going to Alaska to view. Also, they now know a little bit about the photographer) This has a high click-through rate, if only to find out what an Mt. McKinley "Alpenglow" is!
I encourage all at imagekind to share their views on Image Descriptions.
Thanks,
Robert (Bob) M. Braley Jr.