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Until now my observation was that when I joined a certain SE-site/SE-community that this specific site was added automatically to the 'YOUR COMMUNITIES' list of the communities-dialog, sorted by rep-score (please see image below).

Now I recently joined 'The Workplace' and recognized that this community wasn't added automatically anymore.

Is this behaviour due to a certain limitation regarding the number of automatically added sites/communities (i.E. the first five sites I joined are added automatically, the rest I need to add manually due to height-restrictions of the dialog so the sub-list of 'MORE STACK-EXCHANGE COMMUNITIES' is still visible since the site-switcher-dialog has a max-height of 390px)?

What is the logic behind automatically adding sites/communities that I joined to the dialog?

enter image description here

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    I also suspect reputation is involved in some way - its top 5 ordered by rep and age – Journeyman Geek Jun 5 at 11:50
  • @JourneymanGeek That's what I also observed - hence "..sorted by rep-score" - maybe the top-five are added/displayed automatically, the rest needs to be added manually? Hopefully someone can bring some clarification to the logic behind this.. – iLuvLogix Jun 5 at 12:00
  • @JourneymanGeek The site-switcher dialog has a max-height of 390px - so I guess my assumption regarding the limitation resulting in 'MORE SE COMMUNITIES' being still visible might be correct - hmm.. – iLuvLogix Jun 5 at 12:06
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    Nah. You can add as many as you want using the edit button. You can also remove ones you don't want. – Catija Jun 5 at 12:34
  • @Catija As I mentioned in my question I'm aware of that ("..the rest I need to add manually..") - my question was why the recently joined site wasn't added automatically.. – iLuvLogix Jun 5 at 12:38
  • Five max by default. You have to force additional ones. – Catija Jun 5 at 12:40
  • @Catija Thanks - you want to write a short answer to my question so I can accept it? – iLuvLogix Jun 5 at 12:41
  • In a bit. Still waking up. 🤣 – Catija Jun 5 at 12:42
  • Sure - take your time! I had my 10 coffees already.. ;) – iLuvLogix Jun 5 at 12:44
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The site switcher allows five sites max when they're not customized.

These are sorted in order by most reputation first. If you don't have a profile on five different sites, it will only show the sites you do have profiles on.

In your case, you have several different sites with the same reputation (101). So, how do we choose those? They're alphabetical (and cached).

I tested this to show it's the case:

On a sock puppet account, I had a handful of profiles including Parenting, Computer Science Educators, Meta Stack Exchange, Android Enthusiasts, and Arqade. Those five were in my site switcher, in that order:

My site switcher showing Parenting - 83 rep, Computer Science Educators - 46 rep, Meta Stack Exchange - 3 rep, Android Enthusiasts - 1 rep, and Arqade - 1 rep

Looking at yours and mine I guessed that the remaining sites are in alphabetical order. This explains the order and why The Workplace didn't show up in your list when you added it... so I logged in to my sock and joined a site that's earlier in the alphabet than Android Enthusiasts - 3D Printing. I refreshed the page... and nothing happened. Oh, yeah, caching. So, I edited my list and "reset to default" and ta-da!

Now 3D printing is on the list instead of Arqade:

My site switcher showing Parenting - 83 rep, Computer Science Educators - 46 rep, Meta Stack Exchange - 3 rep, 3D Printing - 1 rep and Android Enthusiasts - 1 rep

You can follow these steps to try it for yourself if you're interested.

Do note, if you edit your list, it's pretty flexible. You can make it as few as one site and ... I haven't tested the upper limit but I'm guessing it's high-ish. You can also add meta sites if you'd like to have direct links to them, though there's a bug in the reputation listed. Do note, if you customize the list, it will be locked in that order until you reset to the default, which will re-sort by reputation and return to five sites (or less if you have fewer).

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By default, the site switcher shows your top five accounts by reputation. You currently have a seven-way tie for third place, and room for only three of them. As far as I know there's no baked-in ordering (like oldest first or newest first). The same thing happens on your network profile.

I don't know if, within ties, the order is deterministic or nondeterministic. If you haven't noticed changes in spots three through five in your site switcher, then it's probably deterministic but I don't know what controls it. if you want to see a particular set of sites, you'll need to edit your list in the site switcher. (You can also add more slots, if you want to see more than five sites there.) Once you edit, the order will remain fixed regardless of reputation.

  • ty for the additional info ;) – iLuvLogix Jun 6 at 7:51

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