The content farms really do hurt the internet, and it's time Google did something. It can take dozens of hours to write a quality article, and then to have it rank 200th on a Google search just because there are fifty sites all ripping each other off... not so fun.
It's also not fun from a user point of view, not being about to click a #3 hit on Google because you have a feeling it's going to be full of crap.
It just gives the Wikipedia brand all that much more value. At least you click Wikipedia and you know you'll get something resembling an attempt at good content.