[deltron3030]

>If targeting was killed, you'd most likely see ads from massive corporations only - those who have a lot of cash to spend on ads.

Why? If I run a niche site with ads I'd want to pick ads that fit my site and audience, similar to picking affiliate programs. Picking relevant ads should be my job a as a site owner.

[andreygrehov]

Because most businesses run their ads through exchanges, where supply and demand meets each other. An exchange runs an auction. The winning bidder is the one whose ad your users will see. If small businesses won't be able to target their niche users, corporations will increase their bid price and swallow smaller auction participants.