Backup
I've just read on http://www.zotero.org/support/zotero_data#backing_up_your_zotero_library that exporting to RDF is not an exact copy of my library. I don't know what will be different, maybe someone can explain to me.
However, there should be a "backup my library" option in the settings.
However, there should be a "backup my library" option in the settings.
What would you like the "backup up my library" option to do?
(Also, every program shouldn't need to implement its own backup function. Automated backups should take care of most people, and for anyone else this would be just be a lot of delicate code (dealing with security software, etc.) to replicate something that can be done more reliably in ten seconds in the file manager.)