Content in a forum. Duplicate content
11295
What is duplicate content and how can I avoid being penalized for it on my site?
147570
Mark questions as duplicate of tag wiki
55508
Should I copy my answer to a duplicate question to the original question?
78861
Why are there two separate boxes about duplicate questions?
37508
How to clone a content type?
112233
Translated content: Are they considered as duplicate or unique?
104491
Single question thread with multiple questions, some duplicates
78555
Double booked - User bookmarking question recorded twice
70650
Can you add a separate discussion site?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
148912
CDN virtual subdomain causes duplicated content
135552
Duplicate meta title and description displayed in Google Webmaster Tools
99265
Does Google consider a site's markup when filtering duplicate content?
20899
Linked and Related sections contain duplicate links to questions
48639
Why prevent duplicate questions?
16158
Is it legal to copy Stack Overflow questions and answers?
29050
Would including some of the same words in every product URL be considered keyword stuffing?