Annalisa M. Hilliard

I agree, Ed. Though, it seems maybe there will be an opt-out feature. At least this makes me believe there will be, "We would recommend adjusting the “Email via Google+” setting in Gmail once it’s available to avoid receiving message from people you really don’t want to spam your inbox."

I agree, Matt it is a social media site. However, don't discount the use of social media sites to make connections, build relationships, and develop a presence. Rather than an easy way to build links (if that even exists), it's a great platform to develop a network of people to potentially collaborate with and thus, open up opportunities to build links through content.