Sample content BCOM 230 Week 2 DQ 2 What are some examples of informal and formal group business communications? When might informal communications be best? When might formal communications be best? Casual messages consist mainly of private messages, for example email, verbal phone talking, and memorandums. These types of messages have no established style, and have more details compared to the official messages. It has a good deal of gossip and rumor, for this is the character of human discussion (Lesikar, Flatley, & Rentz, 2008)