When I turn on my (Nexus S) Android's USB storage, Mac OS X mounts it as "NO NAME". Among other mounted volumes, it's confusing. How can I give it a more relevant name?
No need to reformat the card. Once "NO NAME" is mounted, simply select the volume from the left pane of the finder window, right click (or control click) on it, and select "Rename". This will the highlight the name, allowing you to edit it. I haven't seen any adverse effects from doing this on my Droid X.