Also on the same site, I've been able to find two more ENF-ish stories. I haven't explored them fully myself so I'm not sure if they're pure ENF or if they're going to involve sex at some point:
http://editthis.info/create_your_own_story/Pi_Pi_Pi
(Pi Pi Pi - seems to be a story about a college sorority. There are a couple of nude scenes from what I can see.)
http://editthis.info/create_your_own_story/Work_Attire
(Work Attire - seems to be about two women who decide what the other is going to wear each day to work. There are forfeits involved if either woman refuses to wear an outfit or adds anything to the outfit.)