It may beon each page, on an "about us" page, visible only in the page code, or not there at all: notification is not required for protection.
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".
Quite a bit. For information on US copyright laws, visit the website of the Copyright Office. For other countries, the WIPO website is a good place to start.
If you cite the website and if you have permission from the copyright owner or web site.
By the wording of this question, it could mean several things.How do you copyright a website? It is automatically protected by copyright, but can also be formally registered in some countries, although that is not required.How do you get permission to use someone else's content?Ask them, typically in writing.Where is a good website for information on copyright laws? The copyright office of your country is the best reference; a Google search for the name of the country and the word "copyright" will nearly always bring it up as the first result.
Vargas' heirs control the copyright; for more information, see the website below.
All the necessary information is available at the US Copyright office website at http://www.copyright.gov.
Generally, no. However, Congress occasionally changes the law to give back copyright to lapsed works. Detailed information on laws, procedures, etc. and forms for copyright are on the Copyright Office website.
It can be illegal to copy and paste material from a website if it infringes on the website's copyright. It's important to check the website's terms of use or contact the website owner for permission before copying any material.
Generally no, as long as it's properly cited.
Yes it is. All the copyright & trademark information for WikiAnswers can be viewed at the related link below
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.