What G+ is really about (pst it's not social)
On Facebook you buy ads for ~$1+ because you can set target demographic to something as specfic as "women; 42-47 years old; looking for relationships with other women; with a degree in biology or computer science; attened Harvard; Works at IBM; who likes horseback riding or skiing"<p>Imagine if google knew BOTH your search term and your complete personal history. Then the ad price and conversion would increase enormously.<p>That is what Google is trying to get a piece of.