Most forums have the same common rules. Technically, yes, you are violating copyright laws. But, realistically, it's just like a lot of Terms of Service/Use, there are a lot of common templates that are used. Plus, as long as you don't incriminate yourself and say which one you copied it from and which forum you put it on, who is going to know you didn't come up with them for yourself? Seriously? I'm not advocating violating the law, but, common sense dictates here.
Yes it is copyrighted. However, see my above post. You people don't know much about copyright law do you?