indyank - 4:13 pm on Oct 15, 2011 (gmt 0)

Panda was originally designed to address content farms/scrapers

Google never said that....It was the popular SEO and social marketing community who spread that theory...

There are several examples for content farms
1) that survived the initial iteration but were trapped in subsequent iterations
2) that recovered in subsequent iterations
3) that were never hit by any iteration (squidoo, youtube etc.)

There are also several examples of Mashups (scrapers) which were never hit...

There are also examples for forums which aggregate content from blogs and other sites through its "so called users" that were never hit.