We recently updated an intranet web site to Sharepoint. Some of the groups created have muliple permission levels e.g. Contribute,Limited Access. I know that There are Site Permissions, List Permissions, and Personal Permissions but how does an assignment of this type relate to access for each of these if at all. All of our groups are inherited from the top site so would some with Contribute,Limited Access give them Contribute to all sub sites and what role does the Limited Access play in this case?