Written for developers, researchers, technical assistants, librarians, and power users, Spidering Hacks provides expert tips on spidering and scraping methodologies. You'll begin with a crash course in spidering concepts, tools (Perl, LWP, out-of-the-box utilities), and ethics (how to know when you've gone too far: what's acceptable and unacceptable). Next, you'll collect media files and data from databases. Then you'll learn how to interpret and understand the data, repurpose it for use in other applications, and even build authorized interfaces to integrate the data into your own content.

In this small book David Hemenway has produced a masterwork. He has dissected the various aspects of the gun violence epidemic in the United States into its component parts and considered them separately. He has produced a scientifically based analysis of the data and indeed the microdata of the over 30,000 deaths and 75,000 injuries which occur each year. Consideration and adoption of the policy lessons he recommends would strengthen the Constitutional protections that all of our citizens have to life, liberty, and the pursuit of happiness