Scraping is a complex issue that most of us are reluctant to explain. We want honest webmasters to remain honest. Scraping has many forms the most popular form is spider scripting. A spider is sent out over the net grabbing snippets of information from websites. What they usually grab is your domain and chucks of your description tag or title.
This is content theft or basically Plagerism. Also against all SE’s policies and quidelines. I prefer to be brief on the matter. greek39