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"Last month, we reported some SERP changes and this month the trend continues with the following observations from WebmasterWorld members.First, some members noticed a PageRank change, but we noticed that last week.Other people are seeing some sitelink anomalies:I have noticed that the numbers of indexed URLs from the sitemaps of my main site have been steadily reduced in the last two days. The reduction rate is about 5% per day. This drop takes place in all sub-directories and also shows on the results of a site command search. However, it seems that the fully indexed pages are not affected. Additional observations include a change in the link: results and a few substantial drops in rankings (in one case, from #2 to #39).  Forum discussion continues at WebmasterWorld."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/016460.html>