Search Engine Forums, SEO Forum

Duplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar. Mostly, this is not deceptive in origin. Examples of non-malicious duplicate content could include:

Discussion forums that can generate both regular and stripped-down pages targeted at mobile devices
Store items shown or linked via multiple distinct URLs
Printer-only versions of web pages

(By http://www.google.com/support)





Josefina Argüello <a href="http://www.marketingelectronico.com">Marketing electronico</a>

You have given good stuff out. These things can also be considered.

it is ok to have duplicate content .. you would get penalised by Google