Google+ has over 600 million accounts and is integrated across the board with many of its platforms, such as Gmail and YouTube. As Moz pointed out earlier this year, there are a few key reasons why sharing on Google+ can have more impact on SEO than sharing on other social networks. It appears that Google uses Google+ to quickly identify new content, with posts being crawled and indexed very quickly. Each Google+ posts acts almost like a mini blog post, with link equity being passed on, which can help with SEO. And, when a user clicks your Google+ button, it lets Google know that people are sharing your content and find it relevant or helpful.