Google made “don’t be evil” the company mantra during its rise to tech industry power. Now the search giant is warning owners of Google Glass not to be “creepy” in a better-late-than-never nod to the etiquette questions surrounding the wearable computer. Encouraging Glass wearers not to “Glass-out,” “rock Glass while doing high-impact sports,” “wear it and expect to be ignored,” or worst of all, “be creepy or rude,” Google on Tuesday laid out its take on Glass etiquette on the Glass Explorer blog.