Hmm, never noticed this before, since when does Gmail place an ad below the message?

http://www.websonic.nl/nieuws/wp-content/uploads/2010/12/ad_gmail.jpg

Maybe it's just an experiment. I don't see the new ad format.

I see it. I hate it. I tried deleting cookies to get out of the experiment group but it didn't work. Grr!

Well, in my opinion, this is acceptable since the ad does not clutter the interface.

I hate it. I have the ads in one account but not the other and I'm trying very hard not to click on one of the ads by accident. Just doing my bit to make sure the experiment fails – if it is an experiment.

Why has Google started putting ads inside the gmail messages, below the reply box.

Can someone show me how to how to stop this