Carol, I would like to point out that generally people should not just click on links without context. Spam bots have been known to hit phpBBs like this one and put links which when clicked can give someone malware.
I also administer a phpBB bulletin board and I have luckily intercepted a few of them before it hit the main board.
So, yes, don't post copyrighted material.....but giving context to your link might be helpful as well.