Could there ever be a Stack Exchange site that would be willing to answer any question?
94150
Can Stack Exchange follow a more generic approach?
47803
Answering the same question across the site
99142
Which Stack Exchange site is best for Microsoft Exchange questions?
81670
Proposing Windows as its own Stack Exchange site?
32219
Asks a question; never responds to answers/comments
147191
Can I ask questions about asking questions?
102331
Can we show new/anonymous users more Q&A?
103155
Does Stack Exchange allow for answers which question the validity or stance of the original question?
25104
Is there a sandbox to post test questions?
49038
Are questionnaires permitted on Stack Exchange sites?
128444
Should there be anonymous answers (and questions)?
41413
On which Stack Exchange site can I ask customer service questions about product X or company Y?
143472
Which Stack Exchange site is fit for asking domains and hosting related questions?
15852
Posting and answering questions you have already found the answer to
124854
Is there an easy way to find out which SE site I should post a question in?
77934
Why there isn't a feature that lets any user on SO to request other user to answer their question?
146284
Etiquette, rules, or advice on which site to pose a question? (Or, why are there so many StackExchange sites?)