bhartzer - 8:29 pm on Feb 13, 2012 (gmt 0)
Google has no right to be telling people what to do with their sites. I'll never put any social buttons on my sites, or try to promote myself in Google plus or any other social network, regardless of what they say. It's none of their business.
I totally agree. There is no reason that you have to promote your brand's presence on your website, especially by putting social media logos and links on there.
However, keep in mind that even though your brand doesn't have a presence on the social media websites, that doesn't mean that you don't have a presence. If your company or brand exists, then others already have or WILL talk about your company or brand on social media sites.
Regardless if you take the time to promote your company or brand on social sites, others will talk about you. And that's where Google, upon monitoring the social media space, will be able to get an idea of how much your brand is mentioned. Or how many people add a link to your website.