Hi Mario,
Good suggestions. In terms the chart holding a longer span, which chart and how much time are you thinking? When I first started it up I was using a 30 day period to generate the mean and deviations, but I found it was too much data and cut it down to 2 weeks. The deviations over a month just got too big and I wanted them tighter. That doesn't mean I couldn't show more data, though.
I've thought about referrals and I've held off at the moment due to transaction fees. Most payments in are micropayments and if I were to pay out a percentage with fees where they are I'd be in a situation where I'd have to spend 100% of the balance in to pay 10% of the balance back out. I'm hoping after the situation in late July passes we'll have some kind of consensus and the fees will be a lot lower and I'll revisit.
...a referral system and a chart who covers longer time span.
And a button to pause lending ;-)
Otherwise clever made, and looks very handy.