Drop in traffic due to duplicate content?
11295
What is duplicate content and how can I avoid being penalized for it on my site?
36614
The number of questions and answers on my network profile is off by one
142226
Why can we delete the duplicate link?
54221
Would changing IP addresses affect my SEO
34130
Are penalties applied if you have too many 404 errors on your site?
18551
Duplicate questions in feed, and questions incorrectly marked as unanswered
139208
Could there be a bit of reputation leakage between the sites, please?
9459
Traffic (views, visits) is not correctly registered on Site Analytics or Area 51
72826
New question asking form sometimes leads to accidental double posts of questions
77205
What should I do with a ton of alternate domains? Redirect or use landing pages?
71646
Duplicates of an outdated question
110889
What is the most rampant duplicate on Stack Exchange sites?
40974
One page website - Effect on SEO
91152
Feed algorithm changed? Lots of duplicates
101396
Combine websites without hurting SEO
299
Will having multiple domains improve my seo?
20899
Linked and Related sections contain duplicate links to questions