> 1) You teach the other person, until their skill is maxed (i.e., it
> becomes your skill + 1)

I have a question.. how do you know what level you are at when
you are being trained? The last I remember, the message you get
is "Your language skills have improved!" and no number. It gets
pretty boring sitting there watching your friend spam you in
some unreadable gobbly gook. =)