Reprinting and Linking Guidelines

All pages, graphic and web design, contents and additional materials are copyrighted to 2000 - 2015 and/or their respective authors save specific exceptions marked as such.

Copyright and reproduction of our articles and written materials: They may NOT be freely reproduced thorough the web unless specifically authorised, in written. In order to get permission, it is advised that you contact the respective authors directly; please follow this link.

Copyright and reproduction of our pictures: Our pictures and visual materials may not be used commercially, stored, distributed or used in other websites unless authorised, in written, by the respective authors.

Copyright and reproduction of our videos: All our public-domain videos stored in our servers or others such as YouTube can be used freely, provided that no content alteration results from that use. Watermarks shall not be eliminated or altered. If this material is used, a link back to our site, indicating the source (, shall be provided.

Links to our site: You may link to any public document in our site or other hosts related to us, but direct links to images, pictures or graphs, or anything that could be interpreted as "bandwidth steal" is not allowed.

For more information, just contact our editor at

Important: Don't use this address to send spam; most is automatically deleted, nobody reads it here and we may take further action against any user, address or site originating it.

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