I've found one of the keys to promoting your posts through your digital network properties is to make sure all of your social network properties are "connected". For example, I like to post from my Wordpress blog and have it propagate through to twitter and Facebook. I've even posted all the way down through my networks from Pinterest->Facebook->Twitter->Google+->Blog for maximum visibility among my social networks. Since Google+ does not have an API... yet, one of the tricks I've found is to utilize a service called IFTTT ("IF This Then That") to connect to your Gmail and ultimately post to Google+. I guess the point I'm making is to gain maximum visibility with as little effort as possible to reach as many folks as possible.