Flagging classes as not intended for direct initialization

[Roy Smith]

In article <MPG.2f4beb20faeff0729896ba at nntp.aioe.org>,
 Mario Figueiredo <marfig at gmail.com> wrote:

> It's not been an easy ride trying to decide whether or not to use super. 
> I started learning python from a Mark Lutz book that advised me against 
> it. 

I'm curious, what were the arguments against it?