Save My Image File's Metadata
The relatively new "Metadata Working Group" just released their first publication on guidelines for making the metadata stored in image files more portable across applications and file formats. Ever since I started photographing with a Digital SLR camera, I've been paranoid about preserving the rich metadata stored in every file. Paranoid to the point of writing my own tool for modifying/adding to the information as pretty much every single application I've ever tried has corrupted the information to some extent (deleting tags, moving them around, and generally doing bad things).
The goals of the working group are admirable, now we just need more applications to start following them.