It isn't showing you what it thinks you will like at all.
It is showing you the most amount of pertinent advertising that it thinks you will tolerate while promoting sites containing similar advertising as high up the page rank as it thinks you will tolerate.
All those links to your G+ friends are promoted to keep you on Google's properties where they can make the most money when you click on an advertising link - think of Google like a DisneyWorld's Magic Kingdom and G+ like Downtown Disney.
It is showing you the most amount of pertinent advertising that it thinks you will tolerate while promoting sites containing similar advertising as high up the page rank as it thinks you will tolerate.
All those links to your G+ friends are promoted to keep you on Google's properties where they can make the most money when you click on an advertising link - think of Google like a DisneyWorld's Magic Kingdom and G+ like Downtown Disney.