I had the same "problem", but then I remembered what Darth Red had told me about moderating VMs.
Basically, what you need to do is:
1. Check the white box ov the VM, near the "Report" option.
2. Then, scroll down, an click on the "Moderation Tools", in the right corner of your profile page.
3. There, you have four options, of which, you should check the second, called "aproove message.
4. Finally, press "Proceed", and you are done. There is not any notification about an unaprooved visitor message, in your profile.
Visible Instructions:
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