Yeah, this is something that I've enjoyed for awhile! And since the first time a girl said "sure!", it's amazed me how many girls (that I barely knew) were up for it. It became a lot easier once digital cameras came out. Finding a place to develop nude photos used to be a real pain. Select Photo was about the most dependable, but I think they finally went out of business.
I guess I've taken some photos that were pretty decent. Some others that were rank amateur. My problem is I like to come up with poses, but I never really learned about lighting and shutter speeds. The more the camera does automatically, the better I am. :1orglaugh
Except for some photos I took of some girls for a buddy who was tied in with a strip club, I never got into model releases. I didn't worry about it, since I never intended on making any real money from it (though some of my pics were used to make money). And no, I've never shared or posted any of the photos on any web site. Unless you have a release, I don't think that's cool at all - in addition to the legal problems you might wind up having.