Background
We get a lot of posts asking several related but independent questions [1]. Often the posts are even formatted as enumerated lists, making it clear that the author knows that he/she is asking more than one question. I believe that the quality of the question/answer system increases if each post contains a single focused question. It's my understanding that other users generally agree with this.
Question
The site tour does not particularly emphasize the importance of focusing on one question per post. Is there a way for us to make it more obvious to new users that posts should focus on a single question?
Notes
Regardless of the specific rules of the site, I would point out that asking more than one question at a time frequently indicates that further effort by the asker to identify what in his/her own mind is actually unclear would greatly improve the question/answer process.
The site tour is somewhat saturated with fancy animations and has a low amount of information per screen space. This may be related to the main focus of this question.
[1]: Here's a recent example. Note that in the original version the list contained six items.