saved by3 people, first byBill H on 2008-01-11, last byCherrie K on 2008-02-01

However, the expectations of users differ from those of advertisers, and
companies running those sites must serve them both. So while users may find
personal information -- such as someone's vacation photos -- interesting and
useful, advertisers probably will not, unless they help them target ads to those
users.
Another reason it's been difficult to target ads is the "creepy" factor, said
Alex Blum, CEO, of KickApps, which provides software for building online
communities and social networks. He cited the controversy surrounding
Facebook's Beacon online advertising engine, which reported users' online behavior back to the
company even when they weren't logged into the site .
"We look at these social networks the same way we look at Miami, London, and Dubai," he said.
"(Facebook) is a city, and an incredible vehicle for people to create micro
niches around news that is important to them."