Advice and suggest to Adsense

Hello,

I am studying the best positions and format where insert my adsense's banner.
My Forum

I read the nice experience of Briansol, Keith Cohen, Psicofxp..etc

Actually on my forum I use:

2 banners 336/280 under the navbar, first as images, second as text.
1 300/250 text/images after 4 posts (forumdisplay) - Example
1 468/15 links on the navbar, left side
1 300/250 text/images on postbit, left side (postbit) - Example
1 "Search Google" on navbar, right side

I show them only for guest, not for members

So, my site receive about 6/7.000 unique visit at day, and with these banners, I monetize about 10/15 dollars at day.
Do you think who I can improve this money?
Have you some suggest for me?

Thank you

the only ad placement that ever made me money was directly under the nav bar. all in-post/sidebar/intrusive ads never earned me anything to make them worth while.

Further, i've made the best money with 1 ad unit, MAX of 2 ad unit per page (adsense). why?
see this post:
horribly low earnings :(

Hello Brian,

yes it's true, also for me the best placement who I read from statistic is under the navbar, where I use 2 banners 336/280.
Please, therefore I have any doubt, help me to clarify them..

Are there some colours suggest to use with Adsense?
I read of some codes, as on this article

At the moment I am using only:

• two 336/280 under the navbar
• one unit 468 x 15 left side navbar
• one 300/250 on left side thread (showthread)
• search google on the navbar, only it show for guest/members (change to only guest?)

They are visible only to guest, not members (it is correct, right?)
Search Google for example

I monetize very very low with this, about:

search : 50
clicks : 4
earnings : 0,43

Also with 1 unit 468/15 on the left side navbar I monetize very low..about:

clicks : 20
earnings : 1,28

So, to improve ctr of the account, is better who I remove it (search google and 468/15) from my forum or must I leave it?

According to you, How I could monetize at day..?

Thank you

Check out:
Best Adsense positions
Adsense training video

Hello Hendrik,

thank you but I already knew your advice

In fact at the moment I am using any your position's avdice and the best colour (also for you)

The problem is that from advaced statistic of Adsense I see that my best earnings are with:

336/280 left-side under navbar (only images)
300/250 postbit (showthread)

336/280 right-side under navbar (only text) : I earning very low respect the left-side banner and I have few clicks

With other banners..I receive fewest clicks, so I would understand, is better remove other banner and unit, or must I keep them?

Example:

1 unit 468/15 left-side navbar :

5.000 impressions
clicks : 20
earnings : 1,30

If I keep this unit, Could it cause a low Ctr? Don't is better if I remove it?

Same problem with "site search google"

As said Brian, perhaps is better point only to use and show to guest, two 336/280 under navbar and stop?

Thank you