How do you turn off Bing homepage image?
In researching this I found that you can actually just use this url to use the power of the Bing search engine without having to download the images.
http://www.bing.com/?rb=0
You can get to this same link by going to the "Help" link at the bottom of the bing.com search page and find this link "Give me the plain background" on the help page.