Facebook

Two years ago, Facebook COO Sheryl Sandberg gave a speech where she discussed why she thought there weren’t more women at the top. The talk has gone on to be the most watched talks ever hosted by TED, and with good reason.

Following the float of Facebook, there are four key challenges its army of millionaire owners will now have to confront.

Reports that some employers are asking job candidates to provide their Facebook logon details have generated intense outrage – and highlighted a new reality.

Recent rulings by the Advertising Standards Board have wider implications for social media in leading companies.

These days, it's common practice for employers to check out potential job candidates' Facebook profiles. The practice may not be condoned by the employer organisation, but it's certainly difficult to resist.

With almost a billion accounts and growing, Facebook still has a strong lock on the concept of sharing. As such, while no company is immune to failure, the current market nervousness over Facebook is unwarranted.

Investors, it would seem, are giving a collective thumbs' down to social networks. But is it a case of throwing away the baby with the bathwater?

The Silicon Valley guru offers an intriguing insight into the beginnings of Facebook, and gives her verdict on Australia's social media efforts.