It's typically on the bottom of each page. If not, an "about" page is the next best place to look.
You will find that most material on websites is protected under copyright. The website owner should be able to tell you who the copyright owner is. You would then negotiate a price with the copyright owner to allow you to use their material.
You can get information on online services like the Wikipedia encyclopedia, on the website of the US Copyright Office or on the website of RIAA, just search there for "law".
A copy of the digital millennium copyright act is always readily available on the government website. There are two other places that make the terms a little easier to read, which is on the wikipedia website, and the digital millennium copyright act website.
A website is considered a "literary work" under copyright law.
A website can post copyrighted documents if the owner of the website is the copyright holder, or the rightsholder has given permission.
To find the publication date of a website, look for a "Last Updated" or "Copyright" date at the bottom of the webpage. This information is usually located in the footer of the site.
In APA format, you list it as (n.d.) and give the date retrieved.
With permission from the copyright holder, yes.
Given current copyright law, it's merely a courtesy; notification is not required for protection.
Yes, websites should be copyrighted. The exact design, layout, and content of a website should be protected in order to prevent any lookalikes.
Copyright protects texts, images, and the website itself.
If the website does not post it, then look for any copyright date and use the latest (newest) date. For example, if the copyright says, 'website.com - Copyright 2002-2007', then the published date of the website is 2007.