Hi! I am working on a web directory and I am wondering if it would be legal to copy some of dmoz.org categories and subcategories. Can I replicate them without violating any law? Thank you!
The DMOZ makes the terms of use easily available: http://www.dmoz.org/license.html The bottom line is you can use their data, including the categories alone, so long as provide the attribution and links back in the form required.