There are some excellent points, in all areas of the issue here. I am noticed in a crowd, although I do absolutely nothing to be noticed. Maybe it's because I'm about 6 ft tall, and weigh 300 pounds. Maybe it's because I have a "boisterous" voice, and an "off-the-wall" sense of humor if I know someone wants to hear me. Of course, I'm really quite shy, and known to walk into a room or store, "do my business," quietly, and get out. But I can't help notice people noticing me. If someone looks at me directly, I might give a shy smile, try to hide my missing teeth, and move swiftly along.