There seems to have been a recent influx of people here whose ideas on relativity in particular are a little, shall we say, different.
I have thought about moving the more cranky threads to Pseudoscience, but the hard thing for me is to decide whether a poster is posting nonsense maliciously, or merely from lack of knowledge or being misled by other sources. If it's the latter, then if we send that person away they will never learn any real physics, and probably will spend the rest of their days wasting a portion of their life on a fantasy. If we can prevent that in even a few cases, that's got to be a good thing, right? As an educator, I take it as a challenge to try to stay patient and teach real physics. It is easy to ridicule people and simply tell them that you know better. It is much harder to try to explain <b>why</b> they are wrong and you are right.
I realise that there are anti-science nutters around who have a large dose of science or physics envy. That is why relativity is always such a popular target. It is a towering intellectual achievement, and nutters always aim for the biggest targets. No nutball theory ever says "Behold! I have a theory which predicts a different result for the electron gyromagnetic ratio at the 12th decimal place." Instead, it is always "I have a theory of EVERYTHING, which will overturn evolution, relativity and modern theories of poetry all in one fell swoop."
What these people fail to realise is that real scientists would <b>also</b> love to be the ones to show that Einstein was wrong. Many are trying to do just that all the time. The difference is that real scientists know the theory they are trying to modify or challenge inside out, whereas the nutters are lucky to know any mathematics beyond about year 9 (if that), and it is almost guaranteed that they either do not understand the theories they are attempting to discredit, or they <i>mis</i>understand those theories in fundamental and easily-spotted ways to which they themselves are always blind.
At the moment, the level of crackpot theories here seems reasonable. In fact, since they generate most of the discussion on this subforum, I can see good reasons not to move them elsewhere. Often, interesting physics discussions tend to blossom out of the rubbish.
If things start to get out of hand, though, I will consider changing my policy. At this stage, I'll leave it for at least a week or so, and then we might have poll on what the regular users of this forum want. Let's see how we go.
I should add that I am against censorship of different ideas. In every 100 new ideas, there may be 99 which are worthless, but if one is useful or interesting we need to make sure it gets a fair hearing. If you're really annoyed by a particular poster, remember, there's always the "Ignore" function. Or, you can simply avoid that person's threads.