We were going to use them instead of public folders just to help end users avoid the tedium of Folder List, scroll all the way down, expand [+] All Public Folders, look for the right one and open it from the Nav Pane, only to have to go back to Mail or Calendar mode where they normally work every single time they need to use a public folder. It's much easier to have an always-handy checkbox in your list in the Navigation Pane
However I read somewhere that each resource account takes up one CAL. Does that mean if we have 100 cals, and there are 30 resource accounts, that only 70 people can log in at a time?
Well, my real question is simply if resource accounts use up licenses or not. Any official documentation stating such would be a HUGE help