user1908: Yesterday, I went through and flagged twenty or so comments that I deemed "obsolete"; all of these comments were essentially of the form "Please edit this" / "edited thanks". For example:

Is it possible to combine all five chakra elements? and the following comment
How involved was Akira Toriyama in the production of Dragon Ball GT?
What is the mon in Jin's kimono? and the following three comments
How do the Homunculi differ between the FMA manga and anime? and the following comment
What happens to Princess Tsubasa after she is cloned? and the following comment
What are Madara Uchiha's weaknesses? and the following two comments
When does one become a Super Saiyan? and the following comment
What's the significance of revealing a character's blood type? and the following comment
Can Naruto or Sasuke be promoted directly from Genin to Hokage? and the following comment
Does Kanon enjoy figure skating?
Which anime is this woobie taken from?

All of these flags were declined. If these comments do not constitute "obsolete" comments, what do? 
As far as I know, this type of comment thread ("pls edit" / "done") is basically exactly what "obsolete" flags exist for. The help center page on flagging says more or less the same thing (emphasis added):

obsolete — a comment that is no longer relevant because it has been addressed by an edit to the post, clarified by additional comments, or contains no context because it references deleted content


user27: 
EDIT
After consulting with other moderators, I've decided to reverse my decision and remove the comments. Sorry for all the declined flags.


Obsolete comments are comments which are no longer useful in any way. Like user1306322 explained in his comment, in programming that's links to old tech which is no longer relevant.
The "Please improve" and "Improved, thanks" still hold some value in my eyes (I was the one who declined your flags). Because visitors see them and realize that improvements are possible and encouraged all over the site.
If someone were to say in a comment "Well, that's because Tobi is Madara!" even though it was revealed otherwise in both anime and manga (so it's not even spoiler anymore), that would count as obsolete. A comment or detail which is no longer relevant.

Like always, this is my take on this. Feel free to post your own opinions and argue with me.


1908: <p>Yesterday, I went through and flagged twenty or so comments that I deemed "obsolete"; all of these comments were essentially of the form "Please edit this" / "edited thanks". For example:</p>

<ul>
<li><a href="https://anime.stackexchange.com/questions/304/is-it-possible-to-combine-all-five-chakra-elements/309#comment435_309">Is it possible to combine all five chakra elements?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/361/how-involved-was-akira-toriyama-in-the-production-of-dragon-ball-gt/363#comment486_363">How involved was Akira Toriyama in the production of Dragon Ball GT?</a></li>
<li><a href="https://anime.stackexchange.com/questions/592/what-is-the-mon-in-jins-kimono#comment733_592">What is the mon in Jin&#39;s kimono?</a> and the following three comments</li>
<li><a href="https://anime.stackexchange.com/questions/726/how-do-the-homonculi-differ-between-the-fma-manga-and-anime#comment903_726">How do the Homunculi differ between the FMA manga and anime?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/900/what-happens-to-princess-tsubasa-after-she-is-cloned/2372#comment1557_2372">What happens to Princess Tsubasa after she is cloned?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/76/what-are-madara-uchihas-weaknesses/2480#comment1656_2480">What are Madara Uchiha&#39;s weaknesses?</a> and the following two comments</li>
<li><a href="https://anime.stackexchange.com/questions/3075/when-does-one-become-a-super-saiyan/3200#comment2444_3200">When does one become a Super Saiyan?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/3275/whats-the-significance-of-revealing-a-characters-blood-type/3279#comment2521_3279">What&#39;s the significance of revealing a character&#39;s blood type?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/3952/can-naruto-or-sasuke-be-promoted-directly-from-genin-to-hokage#comment3163_3952">Can Naruto or Sasuke be promoted directly from Genin to Hokage?</a> and the following comment</li>
<li><a href="https://anime.stackexchange.com/questions/3674/does-kanon-enjoy-figure-skating/4138#comment3381_4138">Does Kanon enjoy figure skating?</a></li>
<li><a href="https://anime.stackexchange.com/questions/4236/which-anime-is-this-woobie-taken-from#comment3532_4236">Which anime is this woobie taken from?</a></li>
</ul>

<p>All of these flags were declined. If these comments do not constitute "obsolete" comments, what do? </p>

<p>As far as I know, this type of comment thread ("pls edit" / "done") is basically exactly what "obsolete" flags exist for. The <a href="https://anime.stackexchange.com/help/flagging">help center page on flagging</a> says more or less the same thing (emphasis added):</p>

<blockquote>
  <p>obsolete — <strong>a comment that is no longer relevant because it has been addressed by an edit to the post</strong>, clarified by additional comments, or contains no context because it references deleted content</p>
</blockquote>
 27: <blockquote>
  <h1>EDIT</h1>
  
  <p>After consulting with other moderators, I've decided to <em>reverse my decision</em> and remove the comments. Sorry for all the declined flags.</p>
</blockquote>

<hr>

<p>Obsolete comments are comments which are no longer useful in any way. Like user1306322 explained in his comment, in programming that's links to old tech which is no longer relevant.</p>

<p>The "Please improve" and "Improved, thanks" still hold some value in my eyes (I was the one who declined your flags). Because visitors see them and realize that improvements are possible and encouraged all over the site.</p>

<p>If someone were to say in a comment "Well, that's because Tobi is Madara!" even though it was revealed otherwise in both anime and manga (so it's not even spoiler anymore), that would count as obsolete. A comment or detail which is no longer relevant.</p>

<blockquote>
  <p>Like always, this is my take on this. Feel free to post your own opinions and argue with me.</p>
</blockquote>
