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"Imagine if google knew BOTH your search term and your complete personal history. Then the ad price and conversion would increase enormously.That is what Google is trying to get a piece of.