Five percent of indexed CPAN packages come from just two distributions

And both have to do with advertising.

Counting all packages indexed in 02packages.details.txt (possibly across multiple tarball versions), two distributions account for 5% of CPAN packages:

  • Microsoft-AdCenter

Here are the top 10 with the number of index lines each:

Microsoft-AdCenter: 1628
Shipment: 1197
eBay-API: 1160
BioPerl: 851
Graphics-VTK: 707
DateTime-Locale: 469
Net-Amazon: 455
UMMF: 451
Locales: 426

Together they account for 8.6% of the 135,000 or so currently indexed packages.