netmeg - 2:56 pm on Nov 15, 2013 (gmt 0)
There are services you can pay for that monitor your content for copying and scraping; you can also put some unique phraseology in your pages and run Google alerts on it (that's 90% of how I find people scraping my stuff)
It's something that can suck up a little of your time or a lot of your time or all of your time, so you want to make sure you keep on top of how much if at all your scrapers are really injuring you. In my case, they pretty much never outrank me, and if I go after them it's just on basic principles (and to maybe make an example out of them and deter others) If they were actually costing me real money, then I'd be a lot more aggressive about it - but it would come at a cost, that cost being the time I can spend on generating new stuff.
Bottom line is, it's not a Google problem, it's a human problem and one that will never never never be completely solved with the internet we got. You do what you can do, and realize that in part, it comes with the territory.