I stumbled across FFN not that long ago. I was reading a bunch of the stories and felt I should contribute something.
SFBKludge is a compound nonsense word. SFB is Star Fleet Battles.
And Kludge is my most common user name. (It's an engineering term.)
Think of Scotty or MacGyver kludging together some whatsis to save the
day and you have some idea of what it is. :)
Crossovers are
my favorite style of story. IF it's writtern well. IE the
characters/events are true to the established material.