Personally, I'd deal with this by setting up one or more google alerts. Granted, it doesn't involve writing any Perl (at least not on my end), but it saves me from having to choose between either spidering the web myself or violating google's TOS by scraping their search results.

(If you're not familiar with google alerts, it's basically a way of setting up a search to run automatically and email you the top new results as the googlebots find them.)