I am creating a list for a non-profit that I want the public/members (volunteers who want to help) to be able to see, vote and comment, but I don't want them to be able to edit/delete cards/add or lists.  How would I go about doing that?  I'm thinking that something like if only admins could use those functions (add/delete/edit) and board/organization members couldn't?Do I just need to add them to the organization but not the board?  But if I do that will the board still be visible to the public?Thanks for the help!You can take a look at the board I am talking about @ http://www.trello.com/offer 
How do you create a public board where members cannot edit, delete or add cards, only admins can?
trello;trello organization;permissions
Only members of the board can edit/delete cards/add or lists. No need to add them to the organization. Your settings should be as follows:Visibility: Public  Voting: PublicComments: Public  Adding Members Permissions: AdminsAllow organization members to add themselves to this board: Disabled