Like so many before me, I have now joined the github cabal.
One of the more interesting parts of github is their breakdown of projects by language. At the time of this post, Perl has 6% of the projects -- tied with C, 1% more than PHP, 3% less than Python and most surprisingly 1% less than "Shell".
Obviously, given the origin of github, Ruby is way in the lead with 30%. But, I have a feeling that as people get more savvy about SCM tools, especially distributed SCM tools, Perl will make a significant dent in that.