A new online privacy bill could change the way advertisers use behavior targeting. (http://tinyurl.com/km39pz)
Basically, advertisers can buy ad space to target you based on other sites you've visited. The "cookies" in your browser provide this information. For example, if you look up information about a car at kbb.com, car ads might start showing up as you browse online. This bill will require you to "opt-in" as you browse.
The obvious benefit to advertisers is better targeted ads reaching the right consumers.
This will then shift the focus of online advertising to paid search. The consumer controls the topic, so no "cookies" are involved.
It will be interesting to see how this plays out.