Adam Cirlincione: you can no index images from the robots text file. if you want none of your images to show up in the Google index add User-agent: Googlebot-Image Disallow: / to your file
Tony McCreath: If an images still shows up in image searches will they refer back to the noindexed page?
Does an image need to be on one indexed page to show up in image searches?
Does robots.txt actually stop images showing in image search results? I guess it stops Google accessing the actual image data so they would have nothing to show.
I suspect the cleanest solution to excluding specific images is to use the x-robots-tag http header.
No real reason for these questions. I just thought about it while half asleep this morning ;-)
Clint Henderson: No, but if you nofollow, then the image on that page won't get crawled. Noindex just means that page won't be indexed.
Ranu Jain: The robots.txt file asks the bots not to crawl the folders/ files. ;But it does not forbid to index their contents if discovered some other way, i.e. through a deep link.
You'll need an Apache server with mod_headers.c included. ;In the root's .htaccess, you can combine a FilesMatch directive with one for the header, assuming your images are in a folder "/images":