Just found this on another portfolio hosting site in their Education Library section;
"Other disadvantages of doing TFP shoots and some paid shoots:
Photographer typically decides which images are retouched (not always)
Typically only web size images are given
Photographer usually shoots what he/she wants, which may not necessarily be exactly what you had in mind (not always)
Often you will have to sign a release that does not allow you to submit you images to magazines"
Really? Have I been overly generous with my TFP shoots then?
I treat them as I do paid shoots and even signed limited copyright licenses, although I do reserve my moral rights, for models to use the images.