One page one channel?

[Jon12345]

I have adsense at the top and bottom of my vbulletin forum archive. Do I need to put a seperate channel for each adsense ad?

I remember reading somewhere that if you only have one adsense channel on a page, it will only display one advert at a time. Any truth in this?

[wyweb]

Do I need to put a seperate channel for each adsense ad?

I would. Bottom ads typically don't perform well as higher placed ads. This will give you statistical data to see for yourself.

As for having only one channel on a page.. you can have as many channels as allowed by the limits. A small site displaying only 40 or 50 ads total could designate a channel for each ad if they were inclined. It has no bearing on what ads are shown, availability does.

[Jon12345]

The reason I'm asking is to see if you only have one channel, they will mostly only show one advert. It is not the tracking stats of both positions that concerns me, but whether or not one channel will show two seperate adverts on the same page.

Also, the bottom advert is always shown and the top advert only sometimes. Can I somehow switch that behaviour?

[ken_b]

The number channels on a page has nothing to do with how many ads appear. You can have as many ad blocks as are allowed by the TOS on a single page, all in a single channel if you want.

What affects the number of ads that appear are the number of ads available for that page, what style of ads they are (image vs text, standard text vs expanded text, etc) and which ads Google believes will perform best.

[21_blue]

jon12345 wrote:

Can I somehow switch that behaviour?

I don't think so. What you describe sounds unusual but, if you've just put ads on the page, I suspect the Google robot is experimenting trying to find which position is best on your page for the highest-paying ads. In that case, it may be best to leave the Google robot to do its work for a couple of weeks or so and settle down, before you start any experimenting with ad positions.

[Jon12345]

Well, something else highly unusual is happening on my site now. I have just put on the Google Search box for the first time and it displays SERPS results just fine, except that there are no PPC ads!

What gives? Anyone else had this before?

I can supply url by stickymail if required.

[Jon12345]

All working now. I did nothing and then a day later I started to get PPC results.