The ad device Beacon, which many Facebook users accused of invading their privacy, will be a good thing for the site, once all the kinks are worked out, Facebook's founder and CEO Mark Zuckerberg told CBS News in his first interview since problems over the controversial ad device arose. The interview is scheduled to air Sunday in the United States.

Beacon alerts Facebook users when their friends buy merchandise online from companies the social networking site has a marketing relationship with.

Although Zuckerberg apologised for Beacon, the ad tool was not cancelled.

“It might take some work for us to get this exactly right. This is something we think is going to be a really good thing” Zuckerberg said, according to CBS News.

And although many criticise the ads as making Facebook overly commercial, Zuckerberg doesn't see it that way.

“I actually think (the ads) make it less commercial. What would you rather see? A banner ad from Bloomingdale's or that one of your friends bought a scarf?” he said. “I mean, there have to be ads either way because we have to make money ... We have 400 employees. We have to support all that and make a profit.”

Facebook currently has 60 million users, and in 2006 Zuckerberg reportedly turned down a $1 billion offer from Yahoo!. In 2007, he sold a 1.6 percent stake to Microsoft for $240 million.