I'd like to refer my clients who got 8GB, to you; if you have enough educational domain emails to go around.
That would be double their referral space (8GB -> 16GB) to 18GB total.
A referral bonus would be nice, but if you don't want to do that, that is ok too.
I don't have any .edu or other university domain emails to give out.
(The way you double it is you attach an .edu to your account at https://dropbox.com/edu, you keep the original dropbox email.)