As title said.. Just what is too broad?? I did ask a few question, and I think I am specific enough. 
Such this question:
http://serverfault.com/questions/604299/migrating-ldap-user-and-password-to-samba4-ad

Where is the "too broad" applies? 
I really think it specific enough, as there is only one line of command line, or may be a page noting how to transfer passwords, or as one other user pointed out, there no tool for this. 

Or like the other one, I was asking about feature list of an IMAP server, that I can't find anywhere in their site. I know most server complies with IMAP4, but I was looking for specific support, such as this: http://stackoverflow.com/questions/1355082/is-html-5-supported-by-all-the-main-browsers but instead of HTML5, I was looking for IMAP support. 

That too marked as too broad, while http://stackoverflow.com/questions/1355082/is-html-5-supported-by-all-the-main-browsers thread is not. 

So, what the hell is too broad description?? What question is considered too broad?