Yes, indeed websites should have original content so that the web is not filled with duplicated, stale content that irritates users. Search engines like Google and Yahoo! will penalize websites with duplicate content. They may even boot this websites from their database. If you suspect that someone has stolen your content and display on their website, you may bring legal action against the party.
Also, you may check for copyright infringement using Copyscape.com .
If you have a web site with dynamic web pages, then you may need to rewrite your url into a more friendly form. Below is an example of a dynamic page:
www.edlinkmarketing.com/index.php?name=testing&type=234
There are some characters contained in this url that may stop search engine robots from indexing this url. These characters include: "?", "=", "&". We also call these "Stop characters"
The above url can be rewritten into a more SEO friendly form:
www.edlinkmarketing.com/index-testing-234.html



