I was wondering - is there a way to store my gnome key-ring on a usb drive?
I don't think that's possible. It's a Gnome Keyring Goal though:
Storage of Keys and Certificates on Removable Media
Build a PKCS#11 module which allows storage of keys, certificates, and passwords on removable media. This can be used as a poor man's smart card, or for mobility.
- Task: Not yet implemented.