I'll give you an example, a lot of larger sites are using Facebook comments because they know you are less likely to spam and act abusive if your "Facebook identity" is tied to your comments. Now imagine that on a much larger scale, but instead of comments, we're talking all the content online. The best way for them to stop us from manipulating their results is to have our Google identities tied to all our sites.
http://www.wickedfire.com/1700491-post801.html that's what I been saying mangg, people aren't thinking about just how much this potentially helps Google scale their "SPAM" prevention and "nip it in the bud", from my post earlier:
I'm just wondering when they are gonna get rid of backlinks completely in terms of being a major ranking component/relevancy identifier. They have all kinds of data coming from different avenues now, but social still has major reliability issues IMO. It will be interesting to see how they progress...
I think Google+ while not the most successful "social" platform, is a HUGE win for them in terms of helping their algo/webspam team/etc combating garbage SERPs. I mentioned this several months ago when I was setting up all of my sites and connecting them, Google is making it VERY difficult to "fake" THIS type of SERP influence going forward.
What better way to combat internet marketers that build properties for profit (where the website itself IS the moneymaker, not necessarily the products/services/etc) than to make them gradually put their own identity on these properties and connect their identity with their past, present, and future properties.
By designing the whole G+ AuthorRank stuff in this manner and emphasizing: "Hey man, OWN YOUR CONTENT IF ITS GOOD LET US KNOW ABOUT IT AND WE'LL CONNECT THE VARIOUS DOTS BEFORE POTENTIALLY RANKING YOU ANYWHERE WORTHWHILE YAYYY GOOGLESPEAK", Google is putting another roadblock (that will probably grow larger and "More intelligent") in front of people that they believe are not helping their bottom line.
I should add to what I wrote above, the goal is to not see it as a roadblock, but as a new opportunity, which most of here are already aware of and currently doing with authority sites, using paid authors/rel author on our own sites etc...
But I see the whole G plus/authorship/OWN IT platform as another way for Google to weed out the "churn and burn MFA/warrior forum/click bank typical IM spammy aff crap" business mindset in the long run if implemented a certain way in the future...we'll see though.
So once again, Google's your grandmother. Respect her, show her you're an honest to goodness stand up dude, dress up for church on Sundays, and maybe she'll brag to the Internet about great her son is to the whole world etc...