Perilla oil was a critical component in creating durable earthen floors. In Japan, perilla oil was important for fueling oil lamps until early 16th century, before it was overtaken by rapeseed oil. The oilseed contains drying oil elements and was imported in bulk as a substitute for linseed oil into the United States from Japan, until the supply was interrupted by war. In Korea, perilla oil pressed from the untoasted seeds were used to fuel lamps and to oil floor papers. The press cake remaining after pressing perilla oil can be used as natural fertilizer or animal feed. Perilla oil Perilla oil
User-generated content based on user-generated content, including Wikipedia (2001) and Flickr (2004). The BBC set up a user generated content team as a pilot in April 2005 with 3 staff. In the wake of the 7 July 2005 London bombings and the Buncefield oil depot fire, the team was made permanent and was expanded, reflecting the arrival in the mainstream of the citizen journalist. After the Buncefield disaster the BBC received over 5,000 photos from viewers. The BBC does not normally pay for content generated by its viewers. In 2006 CNN launched CNN iReport, a project designed to bring user generated news