## Titles should be complete summaries of the question. ##

Here's the easy rule: 

**Cover the tags, and ask yourself if the title conveys enough information.  It needs to**.

That means two things:

 - Information in a tag *in no way* makes it less necessary in a title.
 * But tags need not be added to a title when they're *not* needed to convey key information

Tags are for filtering, not for completing otherwise incomplete titles.

[See this meta post for more details][1].


  [1]: http://meta.stackexchange.com/questions/180100/titles-should-be-stand-alone-summaries-of-questions-without-depending-on-tags?rq=1