Good article, being into IM myslef i was wondering if this wasnt possible a ploy for them to de-rank the importance of backlinks as a possible  Page rank factor and then add Google+ into their algorithm, well we have allready seen Google+ tools pop up with the guys farming Proxy sites and spoofing ip’s.

I also suspect that thier highly paid algorithm calculator people says that my friends share the same types of interest, this “sharing” Google+ links to my contacts, thus it will deliver relevent content to people. This is to my knowlage Google’s main aim is to deliver search results or websites that you find relevent. I think they are trying to recreate human behaviour in their system…well im sure they are.

Never the less great article thanks