Wow, great service. The integration is very smooth. Looks like it has a lot of potential.
Correct me if I'm wrong, but I don't see many Perl users adopting this. Perl has had a similar service built into CPAN for many years. The big advantage I see in CPAN Testers is that it tests your code on about 50 different versions of Perl on about 20 different operating systems. And the only thing you need to do to use this service is upload your code to CPAN.