its a real question that one can earn money easily..but stabilising it and increasing needed somewat effort..promoting site in different ways are one solution...can we discuss it here??? croresonline.com
The best thing you can do is diversify, so that when one income stream goes low for a bit, the others continue to do well and your monthy income isn't affected too much. Having different sources of traffic can also help, in a similar way. Cryo.