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Since I expect this may prove rather useful, I'm blatantly purloining Asaf's question from meta.math.se. Please post general requests for reopen votes as answers below. Beware that "short" ...

I started an MO homotopy theory chat room at http://chat.stackexchange.com/rooms/9418/homotopy-theory at the request of Jon Beardsley. there seem to be people in it already who know what the word "...

I'm not sure if this has been reported elsewhere. See for example Fred Kline's comment on quid's answer at https://mathoverflow.net/questions/104608/need-help-defining-placeholders-for-primes The ...

I see that some comments have been edited, but on comments I have made there is only a delete button, not an edit button. How do I edit a comment?

Previously much more questions could fit one page in the question list. Currently the font is giant and the information is much less dense.

For example, [tag:lo.logic] renders as lo.logic. It seems that the color for the top and left edges is the same as the background color for meta.

The chat doesn't seem to appear in the sidebar on the main site (although it does on Meta). ManishEarth has suggested that this might be due to the no-ads agreement. I think it would be useful to have ...

Frequently Asked Questions for MathOverflow What kind of questions can I ask here? What kind of questions should I not ask here? What about open problems? Where's the rule that says I have to wear ...

I just reviewed Status of Beal, Granville, Tijdeman-Zagier Conjecture which had a vote to re-open, and tried to select "keep closed". But then I got a pop-up asking me to confirm that I wanted to re-...

Suppose one votes to close a question in "main", and the poster asks in "meta" why it was closed. Apparently the existence of that discussion in meta is not included among the "notifications" ...

When MathOverflow began we decided to start using arXiv classification and created corresponding tags. These are still the most broadly used tags on MathOverflow. However, the usage of some these tags ...

Please help by writing tag wikis for your favorite tags! Use answers to this post to suggest tag synonyms. Finally, if you're a 10k+ user, note how easy it is for you to edit tags now!

Now that MathOverflow has moved to 2.0, there is a potential solution to the long-standing tension between people wanting to make minor improvements to old posts, and others not wanting the 'active ...

Mods have a new option to add post notices. There are three basic notices currently available but MO specific notices could be added: citation needed - This post does not cite any references or ...

I have seen several discussions on this subject but I don't retrieve them. Will it, when the dust settles down, be possible on MO2.0 for someone asking a question, or posting an answer, to make it ...

Splitting off the first item from the main 6. Currently, the 'off-topic' reasons are: This question does not appear to be about research level mathematics, within the scope defined in the help center....

Yesterday my reputation total increased by 1 point. As far as I know there is (was) no action which would trigger 1 point increase (downvoting gives $-1$, accepting an answer gives $+2$, etc.) I am ...

As has been reported in two previous questions on meta (here and here), the mathoverflow update generated a few problems with the rendering related to mathjax. Initially there was a problem with ...

It seems several users have had their name changed after the migration to something default of the form "userNNNN": see for instance https://mathoverflow.net/users/1784/user1784 (VA) https://...

I think the title says it all. Personally, as someone who uses the "newest questions" as the front page, I'm not keen on people tweaking questions or answers that seem to have outlived active interest....

Who did not graph such equations as $y^2-x^2=1$ in secondary schoool? THEREFORE: Algebraic geometry (since it is only about zero-sets of polynomials in several variables) is high-school-level stuff, ...

The answer of François G. Dorais at https://mathoverflow.net/a/23200/12357 has no user name displayed. Is this a bug?

The new review feature is interesting, and I have experimented with it. I have a number of concerns- I wonder whether my concerns are shared, and whether there is anything that can be done to address ...

In the spirit of The 7 Essential Meta Questions of Every Beta I realized that there were a few things that needed to be decided by a large site that has suddenly gone SE 2.0. Initially I planned to ...

On the old MathOverflow, there was a single page (the FAQ) which listed all the privileges and their reputation requirements, in increasing order. This has been replaced by the Privileges page, which ...

The following question has 5 votes to close, but it is not closed : Preparing for Set Theory Research What is going on here? I'm not trying to start a discussion of the merits of this question (...

In How to handle crankery on MathOverflow 2.0? Andy Putman pointed out that he flagged a post as low quality, but it never reached the low quality review queue. I feel that in order to effectively ...

Why did my reputation decrease by 300+ points right after the system up-grading?

Now that we can migrate off topic questions, what sort of migration paths should be useful to have? I think that adding at least Cross Validated, if not one or two of the other science sites, would ...

Is there any way to get back the option to sort answers in newest to oldest order?

In MathOverflow 1.0 we had the ability to hide other users' reputations. Can we get that again? (Also, I had to rewrite this question several times to get past an annoying box that said my question ...

We are going to get many more off-topic questions now. Can we agree to vote to delete on them so as not to pollute the site? It takes a few votes from users who can vote on such things and/or one ...

As far as I remember, there was supposed to be a public dump of the MO database just before the migration: http://dumps.mathoverflow.net/ . Not an urgency by any measure, but something that would be ...

The cite link in the share box is minuscule: Since this is a very important feature for MO, it should have much more visibility. [Related: https://meta.mathoverflow.net/questions/112, Citation ...

Below, a question and answer on the only current MO chat, from two people who have been regulars on MSE chat, the second a moderator somewhere. My concern, for now, is that I see several MSE regulars ...

Obviously MO is listed at All Sites/All, but instead of also being at All Sites/Science, like M.SE, it's in All Sites/Uncategorized. (I noticed it back when the age was wrong, but it hasn't been ...

Being color blinded is not very easy. You end up wearing black shirts and blue jeans, because it's easier. When you look at a computer monitor sometimes the red and green mix together, all sort of ...

The link to moderation tools seems to be missing for me. As Scott Morrison kindly explained in https://meta.mathoverflow.net/a/20/12705, it is supposed to be here in the toolbar: The tools as such ...

The MathOverflow chat needs a chat-theme (in my opinion), because the current one doesn't look very beautiful. It should fit with the design of the main. Does someone have a design in mind, or wants ...

The results from this search don't seem to display properly. I'm assuming that it is not restricted to this search alone. Added later: I have included a screenshot below. What I'm referring to is the ...

Try to add some meat to the on topic page. Also, in the about page, you can edit the site target audience, the example question, and the bullet points that define what to ask about/what not to ask ...

As was pointed out here, Mathoverflow is listed as being 2012 years old here.

Wouldn't it be nicer to have a serif font on MathOverflow? As is done, say, on MSE. It seems to be much more readable, like a printed text. And I'd say making answers looking more like notes or even ...

When a question is closed as off topic and migrated, will it no longer appear in MO, or will it appear in MO with a note saying it has been migrated? Similarly, in MSE, will it say "migrated from MO" ...

Pages like https://mathoverflow.net/review/suggested-edits/1435 display suggested edits for review. The original and edited versions are displayed in parallel columns with the differences highlighted....

I was configuring the Teacher's Lounge ping for MO when I realized that currently, the option to change chat parent user to MO is not available. Could this be added? Also, superpings don't seem to ...

Is it possible to re-enable the "cite" feature from MO (and later MSE)? (I'd like to remind the users, in the case this is going to be enabled, that the feature now hides within the "share" button, ...

One of the best things on the old MO page was the "How to Ask" link on the top. It is true that SE took the hint and added something like that to the previous FAQ (which is now retired), but the MO ...

The old meta had a convenient link back to the main mathoverflow site, but that seems to have vanished. It would be nice to have it back.

On the previous MO we had a thread on Tea called "crank post to flag as spam" in which crank posts were pointed out so people could flag them as spam and have them deleted. Seeing how we are now ...