"G+ is RELEVANT info based upon how many people read the content"
G+ nodes are a activity posts not a single blog post. There is no way they can determine how many people read the content.+Ilya Grigorik
said it's mechanism is based on likes and shares. I didn't said or meant that.
Facebook's mechanism is based on users interest and it's relevant to brand if a brand has shared their own content. For eg. how can it be that if someone else shares +Nettuts+
content lands on "what's hot and recommended" while the same post of nettuts shared by them month earlier didn't land there?? That's bad for them!
For example if you share a video of +Rihanna
on Facebook it will also point to her Facebook fan page if you didn't already liked it and ask you if you'd like it! I would like to see that on G+ as well ! That would be great for users and brands! By brands I don't mean only brands as mc donalds or coca cola but fan pages and communities.