I would say it's no big deal. I started writing Contractually Bound right along the same time that Corrina was writing The Wedlock Wall. Her story inspired me to set mine on Krypton (and to mess with Kal's family a bit - that is, giving him siblings), so I just made a note acknowledging that fact. It wasn't a problem.
Besides, how many times do we see someone post a fic, only to have someone else pick up on a theme/story thread and spin it into a new challenge? (Which, by the way, I think is *awesome*.)
