Find a Penny, Pick it Up

Ok, everyone knows the old poem:

Find a penny, pick it up
All the day you'll have good luck!

BUT... what happens if you find more than one penny in a day??? I mean, do you get extra good luck? Does it cancel out? Do you have to put the first one where the second one was found? Do you get extra good luck if you leave it there for someone else to find? If so, do you get even more if you walk past it and "find" it a few more times before someone picks it up?

I'm looking for answers, people!

- Trevor.
Bessemer, AL
2007-11-10