The subject of copyright is always high in photographers' minds, especially in light of Orphan Works legislation [1] & rampant image "borrowing" online. Consequently there's an ongoing burning desire for secure metadata that can't be stripped away from images.

Last summer I posted a guest blog entry from Russell Williams called "Why Photoshop doesn't provide secure metadata [2]."  Now Adobe metadata expert Gunar Penikis has posted about the Economics of Trust and Permanent Metadata [3].  If this subject is of interest to you, you may want to read Gunar's thoughts & the comments that follow.