The best what to find out is bye setting up a split test. Things are always changing and regardless of what worked yesterday for someone they may not work tomorrow or today.
Something I do and teach in SEO is to constantly have isolated experiments going. This way, you can protect yourself from any algorithm changes.

I see that you are getting...

Here’s a little idea I came across the other day.
Its not exactly black hat, but then again,
its not entirely white either.
Sort of grayish.

Anyway, I found a way to increase your income from Adsense
I thought you guys might like to hear.

1. Go to Google Adwords Keyword Tool at https://adwords.google.com or on
your local Google site.
2. Open the tab “Report And Tools”
3. Select the Keyword Tool
4. Enter the keywords...