The very new approach we take, is that once a visitor is identified as a frequent spammer (10+ spam reports, by IP address and/or email address) then we will not only block them from posting messages and creating carts, we will infact block them from accessing all dynamic areas of your website.
Some messages will get through our defences. But we are working hard to ensure our firewall is stronger.
You can help us, by marking any bad messages as spam. You can do this is a few different ways
When you mark notifications as spam, then you are helping everyone else reduce spam, as everyone doing the same helps you.