Police are urging people to take greater responsibility for online tributes they create in light of a court case in which a man has been charged over defacing Facebook pages dedicated to two dead children.

Bradley Paul Hampson, 29, is accused of posting pornography on Facebook pages honouring Elliot Fletcher, who died after a schoolyard stabbing in Brisbane, and murdered Bundaberg eight-year-old Trinity Bates.

The practice of posting offensive material on such sites with the intention of offending people is known as trolling, and Hampson is the first Australian to face court for such an activity.

Police raided his house early Friday morning, taking him into custody and seizing computer equipment.

They laid five charges, including possessing and distributing child exploitation material. The maximum penalty is 10 years in jail.

Late Friday afternoon Hampson appeared in court and was denied bail.

"This particular investigation raised a lot of community concern," Detective Superintendent Peter Crawford said.

"Clearly the community felt the material that was posted was offensive.

"The Queensland police that have viewed the material were also of the view that this is particularly offensive material.

"What I would ask is that people take some responsibility to prevent these types of things happening by making sure they're responsible and quickly deleting inappropriate material.

"I'm referring to people that actually administer the sites themselves. People that set these tribute pages have the capacity to remove material which they deem to be inappropriate or unsuitable."

Defaced within hours

Elliot Fletcher, 12, died after being stabbed at St Patrick's College in Brisbane and Trinity Bates died after being abducted from her home in Bundaberg.

The Facebook pages established to honour them were apparently defaced within hours.

Australian Federal Police (AFP) are negotiating with Facebook over concerns the company took too long to act on the defaced tribute pages.

Superintendent Crawford says many children are believed to have seen the pornography and Facebook could have removed it faster.

"The AFP are conducting some negotiations with Facebook at the moment and they're seeking our views as part of that negotiation," Superintendent Crawford said.

"I don't want to be diverting [Queensland child protection taskforce] Argos resources in the future to having to investigate trolling matters when they could be better deployed investigating sexual abuse of Queensland children."

But Queensland Police are not just taking aim at Facebook.

Superintendent Crawford acknowledges many tribute sites are established by children and he reiterated a message he says police have been at pains to deliver in recent years.

"The internet is not always as safe a place as you'd imagine. The need for parents to be able to work with their kids to keep them safe online is really important," he said.

"We can go out and arrest as many people as you like in relation to offending that's occurring against children on the internet. But the reality is prevention is going to be far better than a cure."

Police say they are continuing to investigate people believed to have posted offensive images on tribute pages for Trinity Bates and Elliot Fletcher.

Facebook has released a statement saying it "was appalled when the pages were defaced and it congratulates the Australian police on their efforts to bring the offenders to justice".