Color me confused.  In the "normal" financial world, banks earn interest when they loan out depositors' money.  They then return a small (tiny) fraction of that back to the depositors.

What could bitcoinmax possibly be doing with deposited bitcoins that would earn a staggering 6.9% per week?  Do people actually borrow bitcoins short term and pay 10% or so each week for the privilege?  Why would they do that?