Anybody working in any kind of technology arena will, no doubt, be a little interested in this from snopes.com:
One such recent example included the manufacturer’s labelling of equipment where the words “Master/Slave” appeared to identify the primary and secondary sources. Based on the cultural diversity and sensitivity of Los Angeles County, this is not an acceptable identification label.
Of course one should be culturally sensitive but some words have always had multiple meanings as language has evolved. I love this fact about language that something you say today could mean something totally different tomorrow.