Interesting Thing on BV (Please look)

Bearville got a bank just either last year or 2010. So I found something interesting.

If you put in lets say 4,647bb into the last piggy bank in the bank and wait 14 days for it to be over you'll end up getting 6,505bb!

And for the second piggy bank lets say you put in 2000bb then wait 7 days you'll end up with 2,300bb!

Now I think this is cool that you get more money by saving all up for certain days instead of waiting everyday just to get more and more bb from daily activities and games. You'll just have to wait 1, 7, and 14 days. So if you don't understand here's a picture example:

(p.s. my picture is a few days after so its not the right days left, Sorry. the exact days are 1 7 and 14 days)