Facebook Community Groups: Who decides what your town gets to hear?

In many regional towns, the local Facebook community group has become part noticeboard, part newspaper and part town square.

Road closures, missing pets and community events sit alongside debates about council decisions, developments, renewable energy projects and other contentious local issues.

For many people, scrolling the local Facebook group is now part of finding out what is happening in their town.

But there is a problem we don't talk about enough. What happens when the loudest voices start to dominate the conversation?

When discussion becomes something else

Most of us have seen it happen. One person has an axe to grind and posts repeatedly about the same issue. Someone has a personal vendetta that begins spilling into community discussion. Claims are repeated without evidence. Comments become personal.

The same handful of people appear underneath almost every contentious post.

Before long, opening the group can feel less like checking the community noticeboard and more like walking into an argument you didn't ask to join.

Yet, you can't quite look away. But you probably don't want to participate either. And that matters.

Who isn't commenting?

It is easy to look at 20 angry comments underneath a post and assume they tell us something about what the community thinks.

But what about everyone who read the post and said nothing?

People with different or more nuanced views may decide it simply isn't worth commenting.

They might not want to argue with strangers. They might work with someone in the discussion. Their children might go to school together. They might see each other at the supermarket tomorrow.

Research into online political expression has examined this through the idea of a "spiral of silence": when people perceive an environment as hostile to their view, fear of social consequences can discourage them from speaking publicly.

That creates a distortion.

The people most willing to argue can become the most visible, while those least interested in conflict disappear from the conversation. The result can look like community consensus when it is anything but.

And then there is repetition

There is another reason this matters: seeing the same claim repeatedly can affect how credible it feels.

Psychologists call this the illusory truth effect. Research has found that familiarity created through repetition can increase people's perception that information is true, including misinformation.

Think about what that means in a local Facebook group.

A claim about a renewable energy development, council decision or other contentious issue might initially seem questionable.

Then you see it again. And again.

Someone repeats it in the comments. Another post makes the same claim a week later.

Eventually, the claim becomes familiar.

That doesn't mean everyone will believe it. But familiarity itself can influence how information is perceived.

And misinformation is hardly a fringe problem online. In 2025, the Australian Communications and Media Authority found that 72 per cent of Australian adults who had used a digital platform in the previous six months believed they had encountered misinformation.

Among Facebook users, 64 per cent reported encountering misinformation on the platform.

The moderator becomes a gatekeeper

This is where moderation becomes more than removing spam and keeping the language civil.

Moderators decide what gets approved, what stays up, when comments are closed and what behaviour is acceptable.

That doesn't mean moderators need to decide which side of a contentious community issue is right. In fact, they shouldn't.

But there is a difference between allowing disagreement and allowing a community space to be overwhelmed by repeated misinformation, personal attacks or campaigns against individuals.

And if moderators allow one side of a debate to dominate while declining reasonable posts or comments that challenge it, we have an even bigger problem to consider.

The group is no longer simply reflecting the local conversation. Its moderation decisions may be shaping it.

If reasonable people decide it is safer or easier to stay silent, or their perspectives aren't making it through the moderation process in the first place, the discussion becomes less representative, not more.

Then the algorithm decides what we see

Getting a post into the group is only the first filter.

What appears in our feed isn't simply a chronological record of what has been posted. Facebook uses a range of signals to decide what it thinks we are most likely to find relevant or engaging.

That matters because contentious, inflammatory or surprising posts can generate plenty of interaction.

People don't only comment because they agree. They might be angry, correcting misinformation or arguing against it. But all that activity can signal that a post is attracting attention.

The result is that provocative content can become highly visible.

And when controversial claims are repeatedly pushed into people's feeds, we return to the problem of familiarity: something appearing again and again doesn't make it true.

There are now two filters shaping the local conversation: the moderator deciding what gets into the group, and the platform deciding what gets our attention once it's there.

Neither necessarily tells us what our community believes. It tells us what made it through the filters and onto our screen.

So how do we counter it?

The answer isn't to eliminate disagreement. Healthy communities should disagree.

Renewable energy projects, housing developments, council decisions and infrastructure can have genuine benefits, costs and trade-offs. People should be able to question them.

The challenge is creating spaces where disagreement does not become intimidation, repetition does not substitute for evidence and volume does not masquerade as consensus.

For moderators, that can mean clear rules applied consistently, asking people to provide sources for factual claims, limiting repetitive posts, distinguishing criticism of an issue from attacks on individuals, and being transparent about why content is removed.

For everyone else, it means becoming a more deliberate reader. When you see a contentious claim repeated in your local group, don't measure its credibility by the number of comments underneath it.

Find the original source. Look for independent information. Ask whether a claim is fact, opinion or personal experience. Notice whether the same people are driving every discussion.

And perhaps most importantly, remember the people you can't see.

The hundreds or thousands of group members quietly scrolling past may have very different views from the handful of people doing all the talking.

A Facebook community group can tell us a lot about what people in a town are talking about. It cannot necessarily tell us what that community thinks.

Knowing the difference is media literacy.

SoBo Regional Communications is developing practical media literacy workshops for schools and communities across regional Australia, helping people question, verify and better understand the information they encounter every day.