Urs, not sure right now, I'll research this more tomorrow.
I'm too tired to code it today
And Berkeley can (later) decide, how to recognize (some number of) such small donations. Actually any star is secondary, yet probably motivating or satisfactory.
...if you donated more than $10 in the last year an icon () will show up next to your user name...
...Only thing is, PayPal charges on very small donations are pretty high, percentage-wise, so that's not so great, but something's always better than nothing, isn't it?...
1 $ ~= 0.78 => 0.26 fee + 0.52 donation33 cents fee, 33% deduction5 $ ~= 3.88 => 0.39 fee + 3.49 donation50 cents fee, 10% deduction10 $ ~= 7.76 => 0.54 fee + 7.22 donation69 cents fee, 6.9% deduction20 $ ~= 15.51 => 0.84 fee + 14.67 donation1.08 $ fee, 5.4% deduction50 $ ~= 38.76 => 1.75 fee + 37.01 donation2.25 $ fee, 4.5% deduction100 $ ~= 77.52 => 3.26 fee + 74.26 donation4.20 $ fee, 4.2% deduction...