Google Earnings And Universal Aura

The earnings of October 2006 still remain unrivalled. My goal for this year is to make stable more than 300 USD per month in AdSense, and 700 USD from other sources online. So I am making plans of how to do this. I have got multiple small websites that I use for monetizing my web efforts.
To this day I make a few conclusions of how to progress in AdSense earnings.
1. To be more stable make multiple websites.
Unless you are a guru like John Chow or Darren Rowse, it is likely your web site does not bring you enough money. So you can try different themes and niches.
2. Some niches provide great outcome with little effort.
I have a realization that when you make something of use like pictures that people are fond of, you can attract a lot of traffic from the first month. And monetizing can be good.
3. Different days bring completely different results.
It may be Universal Aura or some natural fluctuations that make people decide what to visit and what to click. Formerly I had the best results in the nights as Ukraine is in different time zone than USA and Canada (most lucrative markets). Then the best results came during the weekends. For example, last weekend my income reached more than 20 USD. And there are some peaks during the week. eCPM varies a lot from day to day, too.
Recently I read about higher paying keywords, and that is a technique I am planning to try. The gist is that there are keywords where there is little competition and plenty of sponsors, so average cost per click can be significantly higher, times higher.
My final conclusion is you should never stop, and apply your experience, intuition and knowledge to develop your virtual real estate and grow your audience and your income.