As usual, Google has decided to end yet another one of their experiments. The company announced that Review extensions are going to stop showing this month, and will ultimately be deleted in AdWords accounts in February.
An update appears on the support page about the extension.
If you’re an advertiser who ran Review extensions and would like to keep the historical data, make sure to export it in AdWords this month. You can find the data in both the old and new AdWords interfaces.
In the new interface (select the relevant date range):
Hat tip: Steve Seeley