Ищите в правилах любого крупного фотобанка.
Например, на Айстоке
http://www.istockphoto.com/license.php :
Цитата:
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;
На Шутерстоке
http://www.shutterstock.com/licensing.mhtml :
Цитата:
Use an Image together with pornographic, defamatory, or otherwise unlawful or immoral content or in such a manner that it infringes upon any third party's trademark or intellectual property.
Use an Image in a way that places any person in the photo in a bad light or depicts them in a way that they may find offensive - this includes, but is not limited to: a) the use of Images in pornography; b) tobacco ads; c) ads for escort, dating or similar services; d) political endorsements; e) advertisements for pharmaceutical products, including, but not limited to personal hygiene or birth control products; and f) uses that are defamatory, or contain otherwise unlawful, offensive or immoral content.