Adsense now allow modify adsense code for testing purpose only, keep reading

Wrote by Google Adsense Team:
Keep in mind that generally, modifying your ad code is against AdSense program policies. However, we've checked with our policy folks and they've given our publishers permission to modify the code for use with this specific script for the purposes of A/B testing. Please be aware that the AdSense team isn't able to provide any support or troubleshooting help for this script or this sort of testing.....

Sample? Wanna proof? Look HERE at the bottom (leaderboard)

Wanna know how to do it? Read more HERE

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how to modify the adsense code so that it will look like in the leaderboard...?

easy, just get the adsense code modified by adsense team "javascript" (got inside my blog)

Then create 2 leaderboard or different format as "a" n "b", paste both code inside the javascript. but rmb the both adsense should mark different channel id, can also change color.

The adsense just wanna testing which color or format is easier get CTR, so that benefit us.

After you refresh, then you will see no more ads but look like 4 table and maybe will boost your CTR.

That all, i also tried once appear inside post. lolz, that time is accidently found out.