TDPL stats

[Marianne Gagnon]

> I receive a statement every six months from the publisher, and the next 
> one should come, I think, around October. Until then, one indicator is 
> the Amazon sales rank, which right now is around 150K (lower is better; 
> this is not a great rank). A large jump in adoption hasn't happened at 
> least for now.
> 

Given the lack of stability of D, this is not unexpected to me; but as D's implementation matures and becomes more stable, then I expect we could see a slow but steady increase in use

-- Auria