Web data mining, in its most basic form, is the creation of programs that automatically download webpages. The majority of the simpler programs and scripts we have implemented thus far can be referred to as “web scrapers” or simply “scrapers,” referring to the task of automatically extracting (scraping) specific data from a webpage. Scrapers are typically designed to extract data from a specific website or a clearly defined set of websites (for example, scrape the headlines from all Swiss newspaper homepages).