A word of caution to everyone regarding social media, generally: Be careful what you put out there.
Realize that under most site terms of use, you are relinquishing control of any information that you post (or anything that others in your groups, circles, etc., may post on your behalf). There's very little that can done to effect a takedown of any content that is posted by or about you. Likewise, these companies have no obligation (and are inversely incentivized) to remove your profile or destroy any data they've collected from/about you should you choose to delete your profile in the future.
So, think ahead, folks. From here til Road Warrior, anything that you associate your name with online is going to follow you.