Yes. The materials in this site can be copied, linked, and distributed, since it is published with a Creative Commons license (CC BY-SA: Creative Commons Attribution Share-Alike). This license allows other to alter, transform, and create works derived from this project – even for commercial ends – as long as credit is attributed to OERT and the new creations are licensed in identical terms. This license is often compared with other free and open software licenses, like “copyleft”.
Because new works based on this license bear the same terms, the derivative works are also allowed for commercial uses. This license is used by Wikipedia, and it is recommended for those materials that can benefit with the incorporation of content from Wikipedia and other similarly-licensed projects.
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