Ok I've almost completed a Wordpress site that is a multi-user Image Library. This is a private site, where users must be logged-in to view it.
The average user cannot get to the backend (wp-admin) at all. They are kept at the front end.
So my question is this: What is a clever way to enable a user to be able to 'add' a post (each post is an image - featured image) to a kind of 'cart' or 'lightbox' that is attached to themselves as a user (eg. the cart/lightbox is still there when they log back in - think iStockphoto) and then be able to share this 'cart' or 'lightbox' via email with someone else? ^See note below.
Tricky points bonus: I'm hoping that users can have more than one lightbox ('cart'), although this may not be a game-killer.
^ Note - sharing this link via email will not make anything publicly available. The sharing link will only work for other users who are able to login.