It was going to change advertising and ad targeting forever.
Meanwhile, sites like Yahoo figured out another way to target ads, through something called “re-targeting.”
It allows Yahoo to show users ads for products those users had previously looked at on e-commerce sites on the Internet.
Because users leave Yahoo Mail open all day, re-targeting became a very good business for Yahoo.
And some say re-targeted ads are 3x more valuable than ads targeted using all of Facebook’s fancy data.
Facebook itself says re-targeting will unlock global spending.
Anyway, this is why I went on CNBC today and said that one of the reason to be bullish about Facebook is that finally it has decided to be Yahoo Mail 2.0.