What's an elf?

[mamanurse]

I'm new here, joining a few exchanges. I've been asked "yes or no" to an elf question, but not sure what that is.

Thanks!

[Meriweather]

An elf is a very nice, generous person that will send out an extra package in the event that someone doesn't mail. (We occasionally have someone that does not follow through :( ).
They aren't needed very often, but it is always nice for the hosts to know who they can go ask for a little help.

[UrsulasMyHero]

Sometimes a package will not show up. Sometimes, someone will over commit and not be able to send out a package... and thats where an elf will come in. They'll send out a package in the other person's place. The elf does not receive a package in return.

[mamanurse]

Great, thanks! On another board I'm on, they're called angels.