user27: We really need to agree on this one early on. What do we do with questions who by nature are spoilers? I mean, not part of the question, but the entire question.
For instance, asking about a character who's identity is only revealed later in the manga (but not the anime). Even the question's title itself may contain major spoilers in that case.
The source of the problem comes from the unique relationship between manga and anime. The manga would always be ahead of the anime, and there would always be people only viewing one of the two.
Therefore, questions on topics entirely revealed on the manga is likely to produce heavy spoilers for viewers of the anime.
How do we deal with those? The only way I can think of is implement a feature to mark an entire question as spoilerish.

user118: I would say we should follows these do's and don't's.

DO Avoid major spoilers in titles
DO Warn for spoilers at the top of the post
DO NOT Put your post in spoiler markup
DO NOT Put answers in spoiler markup
DO NOT Tag the question with a meta spoiler tag!
DO NOT Avoid spoilers in the title so much that the question content cannot be understood from the title

The idea is that once you've warned at the top of the post, any further reading is at the user's own risk. No further spoiler markup is needed.

user-1: I think a good rule of thumb is this:

Make sure the title of the question is NOT inherently spoilery. (One of the moderators has already requested this on the site a couple of times.) 
Warn for spoilers in the first line or two of the post.
Mark the main part of the question inside spoiler block quotes ( which is > ! for those unaware)
Try to include some non-spoilery background to make the question discoverable long term.

A good example is Where is Stark Tower located? on SciFi. There's some background to make the question discoverable, but the main part of the question (which is spoilery for The Avengers film) is hidden under spoiler tags.
[EDIT]: I edited this question to demonstrate the above as well as I could.

27: <p>We really need to agree on this one early on. What do we do with questions who by nature are spoilers? I mean, not part of the question, but the entire question.</p>

<p>For instance, asking about a character who's identity is only revealed later in the manga (but not the anime). Even the question's title itself may contain major spoilers in that case.</p>

<p>The source of the problem comes from the unique relationship between manga and anime. The manga would always be ahead of the anime, and there would always be people only viewing one of the two.</p>

<p>Therefore, questions on topics entirely revealed on the manga is likely to produce heavy spoilers for viewers of the anime.</p>

<p>How do we deal with those? The only way I can think of is implement a feature to mark an entire question as spoilerish.</p>
 118: <p>I would say we should follows these do's and don't's.</p>

<ul>
<li><strong>DO</strong> Avoid major spoilers in titles</li>
<li><strong>DO</strong> Warn for spoilers at the top of the post</li>
<li><strong>DO NOT</strong> Put your post in spoiler markup</li>
<li><strong>DO NOT</strong> Put answers in spoiler markup</li>
<li><strong>DO NOT Tag the question with a meta <a href="https://anime.stackexchange.com/questions/tagged/spoiler" class="post-tag" title="show questions tagged &#39;spoiler&#39;" rel="tag">spoiler</a> tag!</strong></li>
<li><strong>DO NOT</strong> Avoid spoilers in the title so much that the question content cannot be understood from the title</li>
</ul>

<p>The idea is that once you've warned at the top of the post, any further reading is at the user's own risk. No further spoiler markup is needed.</p>
 -1: <p>I think a good rule of thumb is this:</p>

<ul>
<li>Make sure the title of the question is NOT inherently spoilery. (One of <a href="https://anime.stackexchange.com/users/4/aarthi">the moderators</a> has <a href="https://anime.stackexchange.com/questions/19/do-we-know-what-happens-to-spike-at-the-end-of-cowboy-bebop#comment48_19">already</a> <a href="https://anime.stackexchange.com/questions/12/list-of-surviving-uchiha#comment47_12">requested this</a> on the site a couple of times.) </li>
<li>Warn for spoilers in the first line or two of the post.</li>
<li>Mark the main part of the question inside spoiler block quotes ( which is <code>&gt; !</code> for those unaware)</li>
<li>Try to include some non-spoilery background to make the question discoverable long term.</li>
</ul>

<p>A good example is <a href="https://scifi.stackexchange.com/questions/16517/where-is-stark-tower-located">Where is Stark Tower located?</a> on SciFi. There's some background to make the question discoverable, but the main part of the question (which is spoilery for <em>The Avengers</em> film) is hidden under spoiler tags.</p>

<p><strong>[EDIT]</strong>: I edited <a href="https://anime.stackexchange.com/questions/214/why-isnt-tobi-blind-yet">this question</a> to demonstrate the above as well as I could.</p>
