IP address blocking can be a crude method. It may shut out more than one person using a computer or a network. It may shut out multiple users of a popular PHP anonymizer.

Those of us who visit Mudcat and other sites by way of an onion router network will not each present an unchanging IP address. We don't always know the IP address when we arrive, and it can even change during a session. The resulting suspicion can lead to post deletion and even exit node IP address blocking.

My prospects are not good when using one user name with variable IP addresses. Prospects might be better when using a different user name for each post, or when not submitting a user name.