I remember having great fun sending Narto and Lou up against, uh, Avalon, I think (can't access GDocs right now, so I can't check), which was an original fic someone had decided they just had to post on FF.net... in the Silmarillion section.

Of course, there's a difference between deliberately doing something wrong and an honest mistake, so this is a thoroughly irrelevant post. But! I found relevance:

It all depends on what's funny. :P I can see 'posted in the wrong section' as a good excuse to send an agent team unprepared into the wrong fandom - or to give someone a really messed up backstory ('I'm from Narnia... you know, the one east of Mordor...'). But it's not something that one should default to worrying about, since July's right - FF.n administration != multiversal physics.

hS

("... and then Manwe came to me in the form of a great lion named 'Aslan', and he said...")