The Mid-Career Crisis of the Perl Programmer
A note on labeling yourself a "Perl programmer", or an "<insert specific language here> programmer":<p>A marketable skill is an investment. If you specialize in one skill it may be very profitable--for a time. Like investing in one stock while it continues to increase.<p>Diversification is the only smart strategy if you're in it for the long haul.  Keeping a portfolio of tried-and-true but also fashionable up-and-comers is the approach I've used to great effect.<p>As a bonus, it can also improve your skills in your existing languages.