What is the "Public" folder used for?

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http://askubuntu.com – In my home folder, there is a folder called Public. Why is it put there? Is there any reason a user shouldn't delete it? If it isn't needed perhaps a bug report should be filed, because it was there immediately after I installed the system. It seems to go missing after I delete it and reboot. I wasn't sure if this was 13.04 specific or not. If it isn't feel free to remove the 13.04 tag and this text. (HowTos)