However, I'd be very, very careful visiting that site. In this day and age there no guarantee that IP Addresses aren't being monitored or collected by someone. Most of the stories on there portray characters that WELL below the age of consent (some characters portrayed aren't even in their double digits.)
A number of years ago I explored the website not knowing what it contained. When I discovered some of the stories mentioned above, I sent a series of e-mails to the monitors of the site asking if they were aware of the ages of certain characters in their stories. Never heard back. A few months later, I returned to see if the objectionable content had been removed, and they had placed the 'fiction disclaimer' that's currently there as a greeting. That's when I did some sleuthing, and discovered that this sort of fiction isn't considered illegal.
I really, really feel like anyone who posts a link to the site might also be doing others a favor by warning them of the content of certain stories. Frankly, I have no issues with anything that can transpire between consenting adults of age, but many of the stories on Nifty.org go too, too far.