With a juror in the Gable Tostee murder trial almost causing a mistrial by her multiple posts on social media during deliberations, legal experts agree the Queensland Jury Act needs to be reviewed.

The Supreme Court jury yesterday found Mr Tostee not guilty of killing his Tinder date Warriena Wright, who fell to her death from his 14th-floor Surfers Paradise apartment balcony in 2014.

It was the fourth day of deliberations and shortly before the verdict was handed down the defence applied for a mistrial in response to a female juror's multiple Instagram posts.

The woman's posts included a photo of a coffee cup and comments relating to the difficulty of the case and its high-profile nature.

Two hours after the defence application, Justice John Byrne found the comments did not jeopardise a fair trial.

Queensland Law Society deputy president Christine Smyth said the comments did not detail the deliberations, but were risky.

"I think to release any commentary on social media is definitely skirting on the edge," she said.

"It's quite important — we are dealing with the lives of a young man and his family and, more importantly, a death of a young girl and her family and loved ones.

"These are serious things to take into consideration and when we are charged with that responsibility it is important we stay well within the lines."

It is an offence to publicly reveal a jury's deliberations and if found guilty a juror can face a two-year jail sentence.

Mr Tostee's defence lawyer Nick Dore said the use of social media would continue to be an issue for the courts.

"It's going to come up again and again," he told 612 ABC Brisbane.

"The judges in all trials give directions for it not to occur but how do you really police people in their own home when they go home."

A spokesperson said Attorney-General Yvette D'Ath was being briefed on matters relating to the case.

"She will determine whether there any improvements that can be to existing arrangements," the spokesperson said.

An Instagram post from a Tostee jury member. ( Instagram )

'Social media use may have to be restricted'

Criminal barrister and Queensland University of Technology lecturer James Morton said the juror's comments were not appropriate to be shared and should only be expressed to the judge.

"Very, very foolish. Very foolish indeed. Judges every day, at the beginning of the trial and at the end of every day before the jury retires for the day to go home, judges remind jurors not to discuss the trial with anyone outside the jury," Mr Morton said.

He said if the comments by other people on the juror's Instagram posts talked about the evidence or the decision-making in the trial, there would have been further grounds for a mistrial.

He said social media was becoming increasingly pervasive in all elements of criminal trials and that the legal system needed to keep up with society.

Mr Morton said lawmakers needed to consider whether the Jury Act should be changed.

"I think the jury members' mobile phones and access to social media will have to be restricted during the course of the deliberations," he said.

"It's similar to quarantining a jury for deliberations, so we may have to take another step and quarantine jury members from phones and outside communications until they reach a verdict."

A juror chats about her role in the Gable Tostee murder trial. ( Instagram )

Ms Smyth agreed the Jury Act needed reviewing but said it was a complex matter.

"Some might suggest that such things as mobile phones be kept out of the jury room, there is some merit to that argument ... but how far do you take that? Do we lock [jurors] up indefinitely and not give them any access to anyone or any communications whatsoever?"

She said amid discussions on the role of social media, the seriousness of the Tostee murder trial itself must not be forgotten.

"It's a very unusual case and in a lot of ways a very modern case where social media itself is to a large extent on trial," she said.

"But of course we need to be focused on the fact that a young woman has lost her life and she'll be much missed by her friends and family."