I'm on the 9th place in Ohloh Top 25 Perl commits (see snapshot)! They are counted by 3 latest calendar month, currently from August.
To do this I added all repositories were I worked (more than 1 commit) to Ohloh. Github is a very convenient site to have commits with your name on it - I used it much.
P.S. I used git-backpan-init from Git-CPAN-Patch to retrieve module history (1 commit for every version on CPAN) for CPAN modules that I maintain (or help to do it), so now I can view history using TortoiseGit.
