I used to use pipes for a network of real estate listing websites. I would combine Craigslist, Ooodle, Trulia and some others and then place Adsense ads around

I used to use pipes for a network of real estate listing websites. I would combine Craigslist, Ooodle, Trulia and some others and then place Adsense ads around the feeds. My sites were getting a lot og organic search traffic, but were ultimately dropped for not having unique content