รบกวน ด้วยนะครับ
It has come to our attention that invalid clicks have been generated on
the Google ads on your site(s). In the future, we may adjust your
payment for any days during which invalid clicks occurred in order to
properly credit advertisers for any invalid activity.
As a reminder, any method of generating invalid clicks is strictly
prohibited. Invalid clicks include but are not limited to any clicks
that are generated through the use of robots, automated clicking tools,
manual clicks by a publisher on the publisher's own web pages, or a
publisher encouraging others to click on his ads.
If you are clicking on the ads on your web pages for testing purposes,
please note that clicking on your own ads or encouraging others to do
so for any reason is prohibited, due to the potential for inflation of
advertiser costs. Please be assured that there is no need to test the
ads on your site, as our specialists review all of our ads to ensure
that they meet Google's advertising standards.
If you would like to visit the destination of an ad to view its content
or to add it to your filter list, you can use the AdSense Preview Tool,
available here:
https://www.google.com/adsense/previewtool?hl=en_US 
The Google AdSense preview tool is an addition to the right-click menu
for Windows Internet Explorer 6.x, allowing you to preview the ads that
may show on any web page. Clicks and impressions from the preview tool
are not applied to the advertiser's account. You can click through to
the target site without worrying about invalid clicks being generated
on your account, and without costing the advertiser for your test
clicks.
If you have any questions, please feel free to reply to this email. We
will be happy to help in any way we can.
Sincerely,
The Google Team
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