Tracking the number of downloads

[Takeshi Enomoto]

The developer of gcc upc is curious the number of
downloads through MacPorts.

It is not possible to count the installed ports by users
but as a proxy we could count the number of downloads of 
source tar balls through the MacPorts mirror sites.
Is there a way for a port maintainer to know a figure
how popular the port is?
The figures could be listed on the MacPorts web site or
displayed with a port subcommand.

Takeshi