100,000/m is ok (in the sense that, you could slap adsense on it and start making some revenue). 1 million is a lot (in the sense that, you could work fulltime

100,000/m is ok (in the sense that, you could slap adsense on it and start making some revenue). 1 million is a lot (in the sense that, you could work fulltime on it perhaps to grow it further). More is great. That's my personal benchmark/take.