This book's website (http://www.schrenk.com/nostarch/webbots) is an additional resource for you to use. To the extent that it's possible, all the example projects in this book use web pages on the companion site as targets, or resources for your webbots to download and take action on. These targets provided a consistent (unchanging) environment for you to hone your webbot writing skills. A controlled learning environment is important because, regardless of our best efforts, webbots can fail when their target websites change. Knowing that your targets are unchanging makes the task of debugging a little easier.

The companion website also has links to other sites of interest, white papers, book updates, and an area where you can communicate with other webbot developers (see Figure 2). From the website, you will also be able to access all of the example code libraries used in this book.

Figure 2. The official website of Webbots, Spiders, and Screen Scrapers