What really ticks me off are all these sites clearly scraping content from Stack Overflow that somehow end up near the top of the search results. How is there not an automated fix for this. Lemme help you out with this Googlers: If site content A == site content B, pagerank = -1.
They have a fix already and applied it to the Wikipedia clones. They intentionally ignore other content scrapers because they drive ad impressions.
I wish google had a feature to permanently ban domains from search results.
this list is really helpful