Had to share this with you - a bit of a conversation between my 8 year old sister and I on MSN (don't worry, she's only got me, my brother and one cousin on there and she doesn't know the password, only I do):

M says:
the computer won't let us talk so much longer :(

M says:
because the bar is getting really small

AKA says:
the bar? what bar?

M says:
the little bar on the side

(*moments later it clicks*)
AKA says:
ohhhh no! Baby that has nothing to do with how long you can talk!

AKA says:
It's called a "scroll bar". See the little triangles at the top and bottom of the bar?

M says:
ya

AKA says:
if you click on it the screen will go up and it will show you what we've written to each other so far

M says:
ohhhhhhhhh!!!!!!