The Sydney Morning Herald ran this story on Australian companies creating and using web 2.0 applications.

The story features Imaging Associates, Freshview and Eurekster as well as beta sites for Outback Online and VastPark.

The story quotes Ross Dawson:

"Web 2.0 in the enterprise is about enabling people to better find
information and work with it," Mr Dawson says. "There are some sweet
spots, which are very natural applications for blogs and wikis where it
makes a lot of sense. And these are projects, competitive intelligence,
and many other things where you are trying to get broad information and
input on a specific topic."

In the case of competitive intelligence, for instance, a wiki can be
set up to allow employees to input information they may have learnt
about their organisation’s competitors, and rely on their colleagues to
collaborate or correct their entries. The same can be true of corporate
blogs…."

Mr Dawson also believes that blogs and wikis can become an alternative to email.

"Email as a communication platform is experiencing breakdown because
people have too many emails. If you can start to shift activity outside
of email, that’s enormously valuable and more effective and more
productive."

More on collaboration here