A2: Business
The Louisville Courier-Journal has an entire article about the appropriateness of the fist-bump in a business setting. One of the executives interviewed is Kristi Mailloux, president of Ann Arbor-based Molly Maid. Mailloux “says she never initiates a fist bump, but reciprocates if offered. She says she hopes it never replaces the handshake except, perhaps, in the flu season.” [Source]