Nearly two weeks ago, Google+ launched Pages, a version of a person profile for non-people. (Google does know the Supreme Court deemed corporations people too, right? So corporations should have a person profile.)
Companies desiring a social media presence have created a page in addition to their Facebook pages, Tumblr, and Twitter accounts. Over the past couple weeks, I have seen a number of posts on Facebook and Twitter alerting me to the new G+ page. They invariably ask me something like “Make sure to follow <corporate name> on Google+, too.”
I am already following you on one of these which is how I saw the message. Following you on two, three, or more social media sites gets me what exactly? The same post multiple times. Maybe I notice something important faster. That might be one in two hundred posts? More likely I will shift the important followings to where I tend to spend most of my time.
This is the same strategy I use for following friends. At least some of them tend to post different things in different places.