Why the Adsense Link Ads Suddenly Turned Gray and Dull?

Why the Adsense Link Ads Suddenly Turned Gray and Dull?

The Google Adsense ads in this blog had suddenly turned gray and dull yesterday. I noticed this change because I had just replaced an image ad with a text link ad to test if it will fare better. I configured the link ad with the default blue and whit...

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