[color="#9932CC"][font="Microsoft Sans Serif"]I'm antisocial enough as it is, so it's not much of a point of contention with me. That said, I routinely wear various nerdy shirts [Eureka Seven, FMA, FLCL, and Zelda], and brandish my DS at times, so I'm open with it to that extent. No one really pays much attention either way, although my Zelda shirts have received many compliments before, but probably because it's a more mainstream and "accepted" series, if that's how you want to put it.
As for my family, my parents fully know of my nerddom, but don't really care too much. "There's far worse things a college student could be doing" is the way they look at it, I suppose.
Really, it's just like anything else, such as personal beliefs and things of that ilk. It's not as black and white as "OH I AM AND AM GONNA RUB IT IN EVERYONE'S FACE" or "oh I do but I dont want anyone to know shhhhhh". It's just there, I'm proud of it, and if people can't at least tolerate it, then their loss.[/font][/color]