We love wpDiscuz. The only thing is, we’ve hit an issue.

We’ve got people using VPNs to rig / inflate votes for their comments. Looking at the underlying data it’s easy to spot, as +1 votes appearing batches about a minute apart.

As VPNs are advertised on every podcast going(!), the use of them is widespread, so the use of them to flood out legitimate comment voting is only going to increase. What steps can you / we take to stop this happening?