When I first entered the workforce upon graduation from university, my Wall Street job meant that I wear a suit and tie with polished shoes every day. But gradually, over the several decades since, dress codes for men and women began to relax, first with casual Friday and later with casual every day. I’ve noticed a similar trend in communications over roughly the same time period. Thanks to social media, many people and organizations have gradually adopted a more casual approach to business communications. I think this is an important development.