I really like "Mote" because one of the primary user actions within this app will be to "promote" an object to a higher category, possibly "demote" as well. So I'm trying to avoid the multi-word thing. But it's still a good idea. I worked with variants for a while like "motes", "moted", etc. but there aren't many.
I guess I'm really looking for someone to say, "screw everybody" and *back it up*. :)