A scraper site is a website that pulls all of its own information from other websites. In essence, no part of a scraper site is original. In the last few years, and due to the advent of the Google Adsense publishing plan, scraper sites have proliferated at an amazing rate.
Many scrapers will pull snippets and text from websites that rank high for keywords they've targeted. This way they hope to rank highly in the SERPS (Search Engine Results pages). RSS feeds are vulnerable to Scrapers
Scrapers tend to be associated in the mind with link farms and are sometimes perceived as the same thing.
TrafficBoosterPro is a scraper site script also and a doorway generator php script