IMO, the best rule is the principle that you should seek to understand the other person's point of view before you make your own points. You can't expect to generate a good debate if you try to counter someone's views with your own views, in some vain hope that they'll accept them because they sound better; you've got to base your arguments on what has been said before. E.g. refuting a poetic description of heaven by conjuring up an even more poetic description of reincarnation is not a debate.
It's also crucial that people realise that respect for people's opinions does not mean that people have to respect your right to hold them; only that it's important to realise that people hold certain views for a myriad of different reasons that you don't know about, and that people have every right to state them. E.g. if someone said that they believed that all heathens should be hunted down and killed, you can be outraged at the belief but not outraged by the fact that he said it, and give him some credit by assuming he has some good reasons for his beliefs. So, everyone should expect, and
want, their views to be attacked. I certainly don't care about some belief you have if you aren't willing to put it to the test. This IS a shooting gallery for views; people should think of their worldviews as robots that they build up carefully and send them into the ring that is religiousforums.com, to be slaughtered by the house robots. The longer your view survives, the better it is! So if you think that your view is the absolute truth, i.e. indestructible, expect us to subject it to a full broadside. If you have a view that you need to believe in and can't risk it to be damaged, then you should probably get lost.
Lastly, you should of course never use
ad hominem (i.e. personal) attacks - and never just dismiss an argument with something like 'that's just stupid.' You could, though, say 'that's just stupid - you forgot that...' or 'that's ridiculous, you just contradicted yourself three times in the same sentence.' Laziness is as bad as anything else for debating. On that note it's also helpful if you try and gauge how 'out there' your views are in comparason to others, and prepare your arguments accordingly. Don't just declare that you were abducted by aliens and expect people to respect that; acknowledge the fact that it sounds totally off the wall, and counter the :roll: before they begin.
Oh yeah, and if you want to be respected, don't use text-messaging abbreviations, and capitalize the goddamn first letter in your sentences!!!