Pete asked for the rules. He got some good comments and suggestions for responsible practices. But here's a recap on the rules.

From the FAQ > General > ROE: Respect copyrights and fair use.

A link to a source is good practice but no safe harbor. There is a lot to copyright law. We provide a link in the FAQ > General > to a good reference. We take a dim view when members lift others' works; on the other hand, a fair use excerpt with a little value added commentary is often VERY helpful to the discussion.

The User Agreement which all members agree to prior to being able to post, makes it clear that responsibility lies with the member. You can access the agreement here and should review in its entirety. A few relevant excerpts are:

You acknowledge that you are aware that messages you author may be perceived by others as libel, slander, plagiarism, copyright infringement, or other violation of law. You agree that you are solely responsible for your message and its consequences, and you indemnify and hold harmless the Operators of this forum, Small Wars Foundation and its affiliates, against any claim or demand, including reasonable attorney’s fees, made by any third party due to or arising from your breach of this Agreement or your violation or alleged violation of any law or the rights of a third party.

While the Operator of this forum may from time to time monitor or review discussions, postings, transmissions, bulletin boards and other user and member generated pages on the Site, neither the Operator nor its affiliates is under any obligation to do so.