2000.03.26 20:34 "Adobe TIFF Tag Registry News", by Niles Ritter
FYI, looks like tags can be reserved again.
I've gone back to the Adobe pages and found a new reference for reserving tags. The new email address is firstname.lastname@example.org. I have not tried it so I do not know if someone is listening.
Here is the reference and a quote.
In order to avoid conflict with other developers, we encourage developers with the need for application-specific or proprietary tags to contact us and register for a block of private tags. We will assign you one to five TIFF tags at no charge. To requests private TIFF tags send an e-mail message to the Adobe Solutions Network Developer Program at email@example.com. Please include your name, company name, address, phone, fax, e-mail, number of tags requested, and what the tag(s) will be used for.
which actually points back to my "Unofficial TIFF Web Page". It's nice to be recognized, anyway....