When did it become acceptable to utilize Facebook for business-level communication?

I mean, I use Facebook for business communication – i.e. to promote my client’s Social Media sites, or to tell everyone what’s new in my business, or to like and share businesses I admire and appreciate with my circle of friends.

But I do not use Facebook as a valid form of communication that should only be between two people or entities. Receiving a private message from a colleague that a) addressed me improperly and b) simply said ‘Call me’ caused me to do the exact opposite and completely ignore the demand. Continue reading →