Royalty Free...
Whether you use Yaffs under the GNU General Public Licence or under a commercial licence, Yaffs is free of any royalty. No need to worry about rising costs for your hit product!
IDEAS List
This describes YAFFS subject areas that need work done, in order to get the attention of those involved in Google's Summer of Code
Yaffs introduction and overview video
This video from 2007 describes Yaffs1 and Yaffs2. The slides from the video are available.
YAFFS embedded structure
YAFFS embedded structure