GigaOm also points out that FireChat's a kickass app for big summer festivals like Burning Man, since cell reception is notoriously garbage and it's hard to find friends or locate stuff like water or beer tents when you can't use iMessage or Twitter.
Business Unit or BU refers to a division, facility or department of an organization. 1  Examples of business units include retail outlets and human resource department.
A business unit is a division, department or functional area within a company responsible for a specific corporate activity. Examples of business units which are a part of most companies, including subsidiaries, include accounting, marketing, human resources, sales and research and development.