When you say Social networking - are you talking Facebook/Twitter?? No - I am not on any of those. I am on LinkedIn - belong to several groups there and obviously here.
No, I don't have a blog - isn't there a cost to start a site? Do business owners actually read/find blogs like that?
I wouldn't even know where to belong on article writing - what topic? I mean, the only topic that means anything to me now is getting started as a VA....