Living in San Francisco - the tech and startup capital of the world - I've chosen to be a different website/app for Halloween for the past few years. And as an extrovert, I really like talking to people. This problem is compounded by the introduction of alcohol. While Halloween for "adults" in SF can turn into amateur night, over the years I've learned to handle my booze.* So with the ability to not act like a mess, I like to have those around me participate in my costumes.
My mantra with my tech-related costumes: Be instantly recognizable. Be interactive. Be fun and engaging, and provide my friends and those around me with something to laugh at during and possibly after (to a point).
This year, I decided to go with Instagram.
I registered the "SFHalloween" Instagram account. While I'm party hopping and bar crawling on All Hallow's Eve, I 'll take pictures of the costumes I see, the people I meet, and whatever else catches my eye. These photos will all be posted to the SFHalloween Instagram account. Based on past years, I don't think I'll have any problem finding people who actually *want* to be a part of this (my Twitter costume from a couple years back seemed to be a big hit with random people). If they're so inclined to just take whatever I'm handing out, I'll be carrying a stack of business cards with the Instagram account and an associated hashtag printed on them so folks can check out the pictures later (and contact me to delete any that might not be to their liking... you know, just in case. We will be drinking, after all).
*I do not condone excessive drinking. You shouldn't. It's bad for you.