tell the password to admin

I was thinking about that, too. In fact, it is easy to apply, but I dropped because I cant see any reasonably sense in that. IF you are the admin, you can edit accounts how you like to. You can also set roles to let authorized users edit other accounts. OR you install the AES module to read passwords.

But either way, I am a bit afraid to implement it, since passwords would be useless if you display them in plain text. You know what I mean? ;)

What is this supposed to do for your application?

If user created by admin only it can be useful to generate password. Choosing password is painful. Maybe it can be implement by adding a generate button next to the password box.