Among the things on the site which can be directly influenced by the site moderators (without any involvement of Stack Exchange staff), probably the community bulletin has the most visibility. The mods can, for example, add the tag featured to some post on meta and it will appear as "Featured on meta."1 (There is also possibility to add events - but I did not see them being used much on the Stack Exchange sites which I frequent.)
So, at least in theory, if the mods would consider some FAQ post from MathOverflow Meta important enough, they would be able to keep it here almost perpetually. (By adding the featured tag once in 30 days - after it expires.) Or they could rotate some FAQ posts to keep them on the community bulletin. (At least when they do not have something else which needs the attention of the users and has to be featured.)
This could be used for some FAQ posts directed mainly at the new users. But probably there is a lot of information in the FAQ posts that even regular users might have missed. (And an additional advantage would be that both the mods and the regular users would look at those FAQ posts a bit more - and perhaps correct some outdated information given there.)
Question: Would keeping some post(s) in the community bulletin - to increase their visibility - be useful?
It is worth mentioning that there were some suggestions and feature requests here on meta which were in a similar spirit. (But not specifically about the community bulletin.)
I will also add some counter-arguments to this suggestion - maybe some of them are more relevant, maybe less:
- It's possible that many MO users do not mind seeing some lower level questions on the main site, as long as there aren't too many of them. (And such posts are also - to some minor extent - useful.)
- To some extent, this is done with new users in mind. But there already is a modal window shown to the users before they ask their first question on MO. This might be considered entirely sufficient - if somebody ignores the information given here, they will probably not click on any link or banner displayed on the frontpage.
- Another argument might be that this is unlikely to help wit the new users - at least if we're looking at stats from other sites where somewhat similar measures were implemented, they seem rather inconclusive: Should folks have to click through an interstitial page to ask questions on Server Fault?, How much did "advice for first-time askers" help?
- This would require additional work from the moderators. (And, moreover, it is possible that the MO mods do not consider something like this useful - judging from the lack of response to the previous similar suggestions.)
Some related past discussions:
- This suggestion was posted this year: Feature request: add short "about MathOverflow" section to the front page But it did not get any response from the mods. (And if we do not count voting, there wasn't any reaction from the MO community, either.) Moreover, I am not sure whether such a modification - where a single site differs substantially from the rest of the network - can be easily done.3 My post is slightly different in that it suggests an action which can be done by the MO mods. (No intervention of Stack Exchanges developers or CMs would be needed.)
- This suggestion was posted in 2015: Why is "what is the difference between mathoverflow and math.stackexchange?" not prominently displayed? The post is somewhat similar to this one and to the one mentioned in the previous bullet point. It has one answer (from a user who is currently a moderator - although he wasn't in 2015.)
In the past, sometimes there used to be a thin strip at the top - however, that was available while running on the old version of the Stack Exchange software. Here are some examples I was able to find:
- New page: How to ask a good MO question. Please provide feedback on this meta.MO thread.- in January 2010
- Moderator Election! Vote here.- in June 2010
- Not at the ICM? Follow it on MSP's twitter feed.- in August 2010
3Although I see that there are banners in the sidebar of Law, Medical Sciences, Christianity. So this seems to be technically possible. See also: Which elements of the frontpage can be customized per site?