User managed to post a question twice within the same second of each other
127414
How was this new user able to post two questions less than 40 minutes apart?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
131056
Vote count rapidly changing for question and its answers
123625
Prevent Multiple Form Submissions (Server side)
33204
What should I do if a user posts sensitive information as part of a question or answer?
5386
I just posted on a closed question on the iOS app
38614
Pure Java/JSF implementation for double submit prevention
120005
Waiting 60 seconds every time I make a mistake when posting a question is a pain
112760
Bug when marking a question as duplicate
32667
Allow questions to be saved as drafts prior to posting
5563
Asking users to accept answer when they comment that it answers their question
100941
Synchronising twice on the same object?
97874
Notify when my question has been linked from another question
31940
Add an alert when answering a question that has at least a close vote as duplicate
111204
Voting and flagging comments gets enabled when loading additional comments in duplicate question
115811
Getting "can only post questions every 20 minutes" but did not post recently
20138
Allow cross-posting of questions to more than one SO site