i know this question might be ridiculous, but nobody else has brought it up yet....
o.k. so almost every korean restaurant/store/other type of korean place i've been to has had a sign in the bathroom asking you not to flush toilet paper, but to put it in the trash can.
has anyone else noticed this?  is this a common thing to do in korea?  
again, this question might be a little silly, but i just had to ask.  i have no shame.  haha..