In a release, Senator Stephen Conroy announced Optus will join the Federal Government's much-criticised Internet filtering trial despite the and the .

Buddecomm telco analyst and director, Paul Budde, told Optus could anger its customers by participating in the trial.

"I thought the credibility of the whole situation was now so low that very few companies would actually put their weight behind it," Budde said. "It is clear the customers of companies such as Optus will not be amused about this sort of activity. So in that respect I am a bit surprised that companies do stick their neck out in a situation like that."

The national clean feed Internet scheme, is part of the Government's A$128 million (US$90 million) Plan for Cyber Safety. It will impose national content filtering for all Internet connections and will block Web pages detailed in a blacklist operated by the Australian Communications and Media Authority (ACMA).

Supporters of the trial have before dismissing it and claimed it could help in the fight against child pornography.