What is the copyright law and how does it apply to knitting patterns?
http://www.geocities.com/jbtocker/copyright/index.html and http://www.girlfromauntie.com/copyright/index.asp provide information on copyright for crafters. Note that both of these apply to US and Canadian law in most cases. Laws vary by country. Check your governments copyright office for accurate information. The US site is very readable and can be accessed at http://www.copyright.gov/ with frequently asked questions answered at http://www.copyright.gov/help/faq/.