yes they do..
http://istockphoto.com/license.php
7. use or display any Content that features a model or person in a manner that (i) would lead a reasonable person to think that such person uses or personally endorses any business, product, service, cause, association or other endeavour; or (ii) that depicts such person in a potentially sensitive subject matter, including, but not limited to mental and physical health issues, social issues, sexual or implied sexual activity or preferences, substance abuse, crime, physical or mental abuse or ailments, or any other subject matter that would be reasonably likely to be offensive or unflattering to any person reflected in the Content;
They asked us to remove something we used on
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