The question occurred to me while I was on vacation. I hadn't brought a laptop, after all it was my vacation. I looked up from my reading to see the three other people I was with all typing on laptops and could only wonder 'Is that how I look?' Are we being anti-social when participating in social media online?
I guess when I am at the office and the only one there any way, I'm being more social when fraternizing online, but when there is more than one person in the room one must remember to not only be social online, but to remember the social niceties of society. This is not always easy, especially in this electronically tethered world.
We must keep in mind the people around us as well as our online family. I know from personal experience that it is all too easy to get caught up in something like twitter, facebook, or even email and suddenly realize that you've been at it for a few hours without relief. Sometimes I'll see someone in my family sit down to "just check email", or "just check my wall" and I know that extricating them will be a herculean task.
So, remember to take the actual people around you into account.