Can I post the same question to multiple community, i.e. stackoverflow and serverfault?
295
Is cross-posting a question on multiple Stack Exchange sites permitted if the question is on-topic for each site?
47803
Answering the same question across the site
137083
Is it OK to copy parts of an answer from one SE site to an answer on another SE site?
76054
Add a message when posting to old questions with more than N answers
127609
Where should I post a Windows PowerShell question?
106999
Is cross-posting wrong (to an external site)?
94150
Can Stack Exchange follow a more generic approach?
80775
Are meta site questions linked to each other?
19629
Where is it preferred to place the answer to duplicate questions?
46786
Where can I ask questions that I don't know how to frame well enough for Stack Exchange?
79536
Is it time for Stack Exchange, Inc and the community to legally separate amicably?
100090
Why don't we add a question with the same tag on multiple Stack Exchange sites?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
16158
Is it legal to copy Stack Overflow questions and answers?
28009
Is it acceptable to move questions without answers between sites?
21901
Why can't I post this to Stack Overflow? It's giving me an error
82853
Can Community ♦ raise a duplicate content flag when an answer is deleted and re-posted as a new answer?