Do Renderosity and Renderotica have software to detect if two consecutive messages to the same forum, or if two consecutive replies to the same message, are identical? That would be useful. I have several times sent the same message or reply twice or more times, but never deliberately; it presumably arose form of mis-mousing or some system or link mishap.

Double submission of forms is a common problem in all web applications. We don't have a good solution for it either. The only way would be compare the exact text of the messages.