[development] mode column in {users}?

[Moshe Weitzman]

You don't have to reuse columns. Just create a new column and use that 
same name in your hook_user(form) and user.mnodule automatically does 
the save/load for you.

Peter Wolanin wrote:
> Does anyone know if any core module uses the 'mode' column in the
> {users} table?  A quick search with grep didn't turn up anything so I
> was thinking about using it as a flag for per-user behavior for a
> custom module for a little site.
> 
> -Peter