Here’s an interesting factoid: when Google searches for a person’s name, the algorithm first searches the membership profiles of Google+. So, if you want your name to be found a little faster, it might make sense to have a Google+ profile.
I’ve successfully avoided social media so far (early to sign up on Twitter and LinkedIn, but don’t use them much). But since 50% of our media today is on social media, it seems that resistance is futile. (All your base are belong to us!)