Some writers search for mountains of inexpensive private label rights articles and edit them before posting them. These PLR articles might maybe not be the finest quality but something can be increased by the rewriting. These PLR articles are utilized as a result of fact that actually although the quality is poor, they nevertheless have aided attract visitors.
I've ranked websites in the past with spun content, and now they are still on #1 position of google. First year (2014) google found me because my spun was really bad, many paragraphs were just copied and my position drop from #2 to around #20 after a panda update. Later I cleaned all my text with better spun (I didn't buy any article!), my ranking went up again, and with more backlinks I reached #1 and it is still there