Possible ‘loophole’ to double your interest?

michaels

I used to do this especially over the weekend and long weekends but then a lot of the banks changed their end of day times to close to midnight and interest rates were lower/good rates only payable or small balances and it was no longer worthwhile.

Even though the return was small there was something about knowing your money was earning interest in several places at once that just felt nice...I think it was discussed on stoozing.com (is that site even still running?)