BRUCE and Denise Morcombe have joined a groundswell of popular support for "shock jock" radio announcer Derryn Hinch and his campaign for a public sex offender register.

And so have more than 100 Gympie Times readers who responded positively to Mr Hinch's campaign on the paper's Facebook site.

Mr Hinch was enthusiastic after meeting this week with Queensland Attorney-General Jarrod Bleijie.

"I'm thrilled," he said.

Mr Hinch is campaigning for a public sex offender register.

He said Mr Bleijie was the most receptive of state Attorneys-General he has met with so far in his campaign.

Mr Hinch said he could not say whether his idea would have saved Daniel Morcombe.

But he said the man who killed him, Brett Peter Cowan, should never have been free.

"At least if he'd been on a register, we'd have known who he was and where he was," Mr Hinch said.

"Encouraged," Mr Hinch said after being asked his reaction to the meeting with Mr Bleijie.

He said small changes to the law made a big difference, such as compelling sex offenders with reporting obligations to report to police once a month, not once a year.

He said he had received a cool response in Tasmania and a lukewarm one in Victoria.

"The government promises they're going to make Queensland the safest place for families in Australia.

"There's a long way to go, but they are certainly doing better than most states.

"I'm thrilled that a sex offenders' register is in the mix.

"Sex offenders' biggest weapon is secrecy and anonymity.

"The joke is when Dennis Ferguson was run out of town by that vigilante, who should be charged with vigilantism, there could be 10 other sex offenders in that same neighbourhood that you can't know about, because it's a secret," he said.

A vast majority of Facebook responses and other online comments backed Mr Hinch's plan.

Meagan Clark on Facebook: "Yay!!! 100% yes!! This needs to happen! They aren't able to be rehabilitated so why protect the guilty and neglect the innocent??"

Ron Owen: "Yes, as long as it includes the judges, politicians, TV personalities and police."

Dina Cooper: "Behind it 100%"

Anne Fisher: "What's the point of having one if it's not open."

Emma Axtell: "Will a young kid whose girlfriend is underage end up on the register?"