Iím not a fan of Google and realise that Google+ has been established to make money but will gather very little useful information unless people are careless enough to give all their personal details. It will be interesting to see how Google authorship develops within this project. Anything that indicates your website has the original content cannot be bad.
Iím sure that Adsense will raise its ugly head in the equation somewhere.
Google is already making a small fortune from the thousands of Bloggers that have the ads but will never reach the payment threshold. They also seem to turn a blind eye to the countless MFA sites that are bringing in revenue but in my opinion they have a winner with Google+. It is easy to use, unlike Facebook which is quite complicated and Google already have many celebrities who have accounts. The only personal information you need give is your name and if you own a website that is easily traceable. To top it all a look around Google+ will show that many accounts have names which are obviously not real. My predication is that it will become very successful. This point can be argued but only time will tell