About a year ago we had family portaits done. The photographer has contacted me to ask if I'd be ok with her putting 2 the photos on a stock images site to be sold for use in advertising, textbooks, corporate use, etc.
The 2 photos are taken from behind, so no faces showing, and its just DH & I holding DS's hands and walking along. So no way we could be identified, except for our family or friends who have seen the photos on our facebook pages.
The only thing that concerns me is that we'd have no control over who used the images, or for what purpose.