I agree this statement wholeheartedly! you cant just dive into writing a fanfic you have to know the charectors and not go to far OOC.
my opinion...
"in regards to the charectors backstories and friendships a yaoi fanfic can be born. you just have to respect the origional writers idea and not go too far."
I myself have seen a few poorly written OOC Sasu/Naru fics. and I myself have written my fair share. *laughs* I learned to look back and rewrite when such things happen or future projects will turn out sloppy.
believable is the key word here, and a fan fic isnt a fan fic if you arent devoted to the origional works.