'Share groups' in KeepandShare are analogous to an email distribution list in your email program. Once a group is defined it's easy to share with that set of people again and again.

All information in KeepandShare can be shared. Once you've shared a document or item, the individuals you've granted access to can view that item, or even edit it if you've granted them that right as well.

By creating a Share Group once, you can thereafter share any item with that entire group by choosing it from the groups pull down in the Share With controls. You don't have to enter each member's name again and again.