Exchange Calendaring has a MRU List for meeting location

Did you know there's a "Most recently used" (MRU) list in the Location field of meeting requests?

The last 10 locations you used are stored in a most recently used (MRU) list. To see the list, click the down arrow on the right side of the Location field in the meeting request form, or press the up/down arrows.

Pretty useful when using Outlook to schedule meetings. Since we are looking at different Calendaring systems, this is a useful tidbit.