You may also put your work under the OpenContent if you want. I am also considering switching to OpenContent. Put your copyright notice at the bottom. If it's not too inconvenient, have the page hosted on your own web space so that you can easily make updates to it. Even if you have the page hosted on your own server, it's also a good idea to e-mail me the updates in case something happens or whatnot.
Filenames depend on what type of audience it was aimed for.
It's better to write documents aimed at all distributions. Remember to close the HTML tags. I emphasize this strongly so that your readers don't get annoyed at you. If there's anything you're still unsure of, look at the HTML source on any of my documents. If you still aren't sure, then send me an e-mail.