For those that don’t know what it is, ssh-agent (and ssh-add) allows you to authenticate (type in your password) once and, for the rest of the local session, automatically authenticate to remote sessions (you don’t have to type in anymore usernames/passwords).
For any systems administrator, this is a godsend (sp?). You can even run scripts remotely or pipe output invisibly with this technique.
Greetings from the Denny’s at exit 18 on Route 83, just outside of York, PA. I’m just playing around with my cell phone and laptop while waiting for my dinner. I should be in Upstate NY this evening. Hopefully this will still work (there’s no coverage map for the service I use).