Well, that phrase is part of many of the standard model release forms, which is where I got it. In the minor's release, it's a pretty good guarantee, but in the adult release, you have to be careful. Good point.
I think people have to use a little sense in creating their model releases - when you are completing your own releases - these aren't meant for anyone to use 'whole hog', but as a sample to create their own multi-use forms.
If you shoot nude people, or partly nude people (as in underwear or lingerie), you might expect that somewhere, sometime, someone may use them in a pornographic way, even when they aren't intended for that.
If you shoot people fully clothed (as I do) then they better not find their way into porno, or I can guarantee there's gonna be a lawsuit
(whether it'll be won or not is a different story). I won't shoot nudes - ever, so my release it suitable for my business, but I should have made a notation in the original post. It might be worthwhile to change the clause to indicate that every effort to prevent that use will be made or something similar.
The types of people I shoot wouldn't likely sign a release if there wasn't something about that in there. I only submit to a few sites, so this part of the forum is open for anyone to post their release forms for others to use or adapt.
I thought about posting links to all the ones from various sites, but more and more people just want one that all sites will accept and that they can use daily for their own business.
One thing I always have wondered about tho - some of those uh, what to do they call them, 'tabloids'...do they actually take someone's head from a photo and put it on another body? Because that could happen with the photo of a fully clothed person.