Your receive acorns for various activities on this site. Here is a list of things you can do to receive acorns.
http://garden.org/special/acor...
You can also give and receive them, with other members. To do this you can click on a persons name, to go to their profile page then click on give acorns. You can also give them as a reward or thank you for a post that you like by clicking on the acorn in that particular post. You can use them to purchase micro badges on you profile page, and you can purchase tickets for our "not a raffle, raffle" when they are held.
