I keep my release short and unthreatening:
In exchange for consideration received, I hereby give permission to Alec Soth to use my name and photographic likeness in all forms and media.
Since I don’t use my images for advertising I don’t need a release. But it is a good place to keep names and contact info. Years ago I used to tell my subjects I would send a print but usually didn’t do it. I have a lot of built up guilt. Now I’m pretty good about mailing a picture to everyone I photograph.