Reverse dependencies in Hackage

[Malcolm Wallace]

> http://bifunctor.homelinux.net/~roel/hackage
>
> Browse to your favorite packages and find out how much other packages
> depend on them!

This is very cool!  It will help package authors enormously, if/when  
they change the API of their library, to discover who to notify to  
ensure that there is as little consequent breakage as possible.   
Thanks Roel.

Regards,
     Malcolm