Don't forget something, write about a topic you like and you know about it, don't write for the high price keywords.. unless you don't want to make a site which is the same with about 1 million... everybody builds website with a topic they don't know, don't copy paste stuff.. the domain name makes nothing to the topic, if you can make a good unique website with high traffic then people will remember you, otherwise you won't make money.. even if you choose a very high payed keyword, you won't have traffic.. must start with this idea..imo
It took almost a year before I started earning more than $100 per month. The key to making lots of money is having a large web-site that doesn't suck.
To make more money off of AdSense you need more traffic and to make more traffic you need to learn more about search engine marketing/optimization.
I launched something last friday, its now got 700 members and so far today I have had 87 Adsense clicks equating to just over $44 dollars, yesterday was $27, today could be over $60 the way its going, am I happy! yes im being coy about what it is, but its inspirational hopefully! My advice, its not what you know but what you do with it. Ideas are key.