Alert users of max question limit BEFORE writing the question!
91074
Please warn about exceeding 50 question limit prior to asking a new question
158061
Let questions stay open for a minimum amount of time before being closed
133560
Omit comment replies from the minimum character limit check
91504
Ask a question and notify users on specific users list
82017
Don't limit the number of *internal* links new users can include in questions (at least on meta)
84692
Knowing Your Limits: What is the maximum length of a question title, post, image and links used?
130442
Catching "Maximum request length exceeded"
76899
What is the maximum possible length of a query string?
2937
Asking the user for input until they give a valid response
103250
Please charge rep for questions after threshold
32667
Allow questions to be saved as drafts prior to posting
43771
Impose strict time-limit for questions on Hot Network Questions list
67756
Don't lower the review limit on Stack Overflow
133971
Let's have an explicit triage system for questions from new users
25336
Give users a way to see their "Positive Question Record" score
151912
Raise an automatic flag for spammers
98049
BLOCK QUESTIONS IN ALL CAPS